For better or for worse, YouTube has just made it easier to add annotations to your videos. Annotations, which were introduced to the site last June, consist of little grey popups that can include standard text boxes or speech bubbles, or offer interactive links to other clips. They’re useful when they’re used sparingly, but can also be more than a little annoying.

To insert the annotations, users previously had to use an editor tucked under the ‘edit video’ menu. Starting this week, you’ll be able to add annotations directly using a targeting crosshair that appears whenever you view a video that you’ve uploaded. Clicking on the video will bring up a menu asking which annotation you’d like to insert, and you can use a sliding bar on the video’s timeline to determine how long each one appears. A pair of arrows appear at the bottom of the video, allowing you to jump between each annotation so you don’t have to manually watch through the video to find them all.

Aside from the (possibly alarming) fact that this makes adding annotations easier, the addition is notable for what looks like one of the first implementations of Omnisio’s technology on YouTube. Omnisio, a company that allowed users to enhance their videos by creating mashups, adding comments, and interacting with other users, launched last spring and was acquired by YouTube only a few months later in July 2008.

Note: If you don’t like the annotations, you can always turn them off.

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The company was founded by three Australians (Ryan Junee, Julian Frumar and Simon Ratner). The service lets users annotate videos, mash various clips up, and synchronize Slideshare presentations to videos (great for conference presentations). Omnisio users can extract sections of clips they find on the web (currently only those on YouTube, Google Video, or Blip.tv). They can then take those clips and stitch them together to form new, embeddable compilations.

This is yet another liquidity event for Y Combinator, which invests small amounts of capital in very early stage companies, usually at the idea stage. Reddit was acquired in late 2006, TextPayMe was bought by Amazon in 2007, and Auctomatic and Anywhere.FM were snapped up earlier this year.

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Omnisio has launched a tool that presenters will find very useful for conveying their messages to online audiences.

The new presentation tool takes slideshows uploaded in PDF format or to SlideShare and synchronizes them with videos uploaded to YouTube, Google Video or Blip.tv.

The synchronization allows viewers to jump around within presentations by clicking on particular slides, which show up in an area below each video that operates much like the dock on Mac OS X. As you watch a presentation, you’ll see the current slide sitting alongside the video so you can refer to it just as you would when watching a presentation in real life.

Publishers can create these video-slideshow compilations with a fairly easy drag-n-drop tool provided for free on Omnisio’s site. In addition to syncing slides, they can add markers for people and highlights that show up within a video. These too can be used to jump to particular spots during playback, such as when your favorite celebrity appears or a particularly good joke is made.

This is Omnisio’s second video compilation tool. The first, which debuted in March, lets you take multiple videos found on the net and stitch them together into new mashups.

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Even though video has become a popular internet pastime over the past few years, there’s still a very little that average people can do with it. They can watch it, comment on it, and embed it on social networks and blogs if it tickles their fancies. Oh, and they can create it…but the majority of them won’t bother.

Omnisio wants to provide more options for us less creative types. Since most people don’t have enough time, patience or skill to record their own original content, Omnisio is giving them the tools needed to create mashups of other people’s original content.

As with Hulu, Omnisio users can extract sections of clips they find on the web (currently only those on YouTube, Google Video, or Blip.tv). They can then take those clips and stitch them together to form new, embeddable compilations. The process from start to finish is easy enough; just copy and paste the URLs of the videos you want, and drag a few sliders to indicate where each should begin and end. The only real beef I have with the tool is that (oddly) you can’t move the “start” slider to exactly where you want it; it only moves in 8-second increments. The “end” slider doesn’t have this problem.

The second innovation Omnisio brings to online video is a new commenting system that places comments within videos as popup bubbles. To be fair, these aren’t entirely new to the web; iminlikewithyou users are altogether too familiar with them. But they’re fun nonetheless, and it’s nice that you can use them to annotate videos with friends without interference from the mob that overruns YouTube.

Finally, the guys behind Omnisio are developing technology for combining slides with videos and tagging interesting people and highlights. The presentation functionality will essentially sync slides with various points within a video and show those slides in a dock below the video where you can click on them to skip around.

Omnisio is a Y Combinator company founded by Ryan Junee, Julian Frumar, and Simon Ratner. Expect even more capabilities from them down the line intended to put a “spine” into online video.

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The fledgling startups listed below will present their ideas and initial products to investors at this spring’s Y Combinator Demo Day on March 18. Of the 19 companies in this batch, 10 have already launched and only one remains in stealth mode. Most of them have been in development for only three months.

Chatterous

Chatterous connects various forms of communication so that people can message each other regardless of the form they use most. Currently the service ties SMS, email, IM, and web together so that messages sent using one technology will be received by others using any of the other technologies. This works by setting up a group on Chatterous’s website and putting down all the ways your friends can be contacted. You can then start sending messages to them immediately, meaning that they don’t even have to change their own behavior all that much. Chatterous launched in public beta last week.

Addmired

Addmired provides the AddHer and AddHim social network widgets, both of which display two user profile pictures at a time and ask users to answer certain questions about them, such as “Who’s more popular?” The founders argue that their widgets are more appealing to social network owners than other widgets, because they help drive traffic within the social networks, not siphon traffic out of them. They look to establish service level agreements with some of the smaller social networks. We covered the service in February here.

Snaptalent

Snaptalent is an advertising network for job listings that uses IP detection to determine whether website viewers work or study at particular companies or institutions. It then displays listings from employers who want to attract workers from organizations known for their talent, such as Facebook or Harvard. See our review of the service from this week here.

RescueTime

RescueTime helps individuals and businesses track how they spend their time at the computer, and consequently, find ways to become more productive. The web-based dashboard charts application and website usage over long periods of time and shows you whether you’ve been reaching your goals. So far, 278 businesses have signed up for RescueTime for a total of 26,132 seats. See our review from last May here.

MightyQuiz

MightyQuiz is a user generated quiz destination and widget provider that we covered recently. Users are encouraged to answer trivia questions from a wide range of categories. They can also submit their own questions and embed them on their sites. The site is very sticky: the average session lasts 8 minutes (or 19 questions). As a comparison, the founders claim that Slate has an average session length of 4:22 and Wired has 3:34.

Tipjoy

Tipjoy is an easy micropayment system for the web. It has been designed to cut out the steps necessary for website visitors to leave small amounts of money for content publishers, such as bloggers. The Tipjoy button placed on a website asks for only an email address and by default registers a donation of 10 cents. The service is nearing 70,000 impressions per day and the founders are exploring different models for micropayments, such as employing them to finance high definition video on the web. We wrote about Tipjoy here.

8aWeek

8aweek promises to save you hours of time wasted each week on time-drain websites like Facebook and Drudge Report. The 8aweek browser toolbar will track your website usage, remind you of how much permitted time you have left on each restricted site, and even block you from particular sites once you’ve spent too much time on them. See our review from February here.

WebMynd

WebMynd provides a visual interface for reviewing your browsing history. The founders draw comparisons to Gmail – just as Gmail obviated the need to sort messages into folders by providing effective search and tagging, WebMynd renders it unnecessary to manually bookmark sites and organized them into folders because it’s easy to search and visually flip through the pages you’ve visited. WebMynd operates as a Firefox toolbar and has already indexed 8M page impressions. We wrote about them in January.

BaseShield

BaseShield will protect Windows PCs from malicious viruses and attacks by leveraging virtualization software. Its methods improve on existing anti-virus solutions by preventing all types of attacks, not just the recognized and documented ones. The service has yet to launch.

Insoshi

Insoshi is an upcoming white label social networking platform. It will differentiate itself from many of the other social networking platforms by taking a completely open source approach (think: WordPress of social networks). The software has yet to be released.

Mixwit

Mixwit describes itself as a combination of Slide and iTunes. While it has more ambitious long-term plans, it currently provides an easy way to make sharable mix tapes with songs found through the MP3 search engine Seeqpod.

Omnisio

Omnisio will help you annotate and share videos from any website. It will also add structure to the existing video content on the web. The service has yet to launch.

Deluux

Deluux aims to become a distributed Facebook, or an inverted Ning, by relocating the center of people’s online identities to their websites, which exist outside of any one social network. The service will facilitate the distribution of personalized content around the web and help drive traffic to these personal websites. It has yet to launch.

Wundrbar

Wundrbar wants to improve upon the search bar experience by providing users with powerful inline commands. The idea is reminiscent of YubNub but Wundrbar strives to appeal to a larger audience and to incorporate functionality that helps people manage their personal online accounts in addition to searching the web.

YumDots

YumDots wants to be the go-to mobile application for finding places to eat when out on the town. Its emphasis on using interactive maps to display information about local restaurants makes it more efficient than other mobile review services like Yelp’s. The service has yet to launch.

280 North

280 North will debut with a web-based PowerPoint clone called “280 Slides” that strives to mimic the desktop experience and features the ability to export presentations to PowerPoint format. The founders’ longer term goals consist of providing a JavaScript-based development framework for building desktop-like applications for the web. None of these services, however, have been launched yet.

Kirkland North
Kirkland North wants to take an infectious campus-wide game popular at Yale and Harvard last year and spread it to other campuses around the country. The Risk-like game pits sections of campuses against each other in a virtual battle for university-wide domination. While the founders have plans to roll out an integrated solution that can serve many institutions at once, they are currently rolling out individual versions of their online service, such as one for Stanford that launched only two weeks ago and already involves 20% of the campus.

Joberator
Joberator will help employers find developer talent by encouraging computer science students to refer their developer friends, of whom they have more intimate knowledge than any professional recruiter. Incentives for personal referrals are created by employers who list the bonuses they will pay to pay those who recommend candidates eventually hired. The service has yet to launch.

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