If you weren’t one of the 1,800 people who attended TechCrunch50 earlier this month to watch 52 startups launch, and didn’t catch the UStream live stream of the event, don’t worry. You can download around 25 hours of live footage - the entire three day conference - if you’ve got the room on your hard drive. The BitTorrent links are below. Each file is about 5 GB.

Beet.tv, a media company that specializes in providing videos for business-oriented individuals, was busy at TechCrunch50 this past month. The company recorded videos with over 30 companies and has posted them to its site for the world to see.

Want to find out what Me-trics had to say after it got off stage? Interested in a one-on-one discussion with Yammer about how the company works? You can check all that out at Beet.tv’s TechCrunch50 page.

By far, the biggest crowd pleaser at last week’s TechCrunch50 was a demo by the Japanese startup Tonchidot for a mobile social tagging product it is developing called Sekai Camera. The Japanese CEO Takahito Iguchi overcame a very noticeable language barrier and deflected serious questions from the judges through sheer will of character. He had the audience roaring in laughter and rooting for him, as he answered lengthy questions about how his service would actually work with brief responses such as “Imagination!” and “We have a patent.” When judge Rafe Needleman suggested that Google would buy Tonchidot, he objected: “Never!”

The original video portion of the demo has been watched more than 108,000 times on YouTube. But I’ve embedded the entire demo above, including the follow-up Q&A. The entire video is 17 minutes long and takes about a minute to get started, but it is captures how Iguchi had the audience, and even the skeptical judges, eating out of his hand, despite a limited grasp of English. The Q&A starts about 8 minutes in. Iguchi was particularly adept at exasperating judeg Tim O’Reilly. There is also a shorter edited video on YouTube of the judges’ Q&A with subtitles (embedded below). Anyone doing a demo can learn from this: keep your answers short, don’t drown in details, explain how you will change the world.

Want to drill down to see how different iPhone apps are doing? You can click around iTunes and collect your own data, or you can visit the Application Ranking section of Mobclix and see the breakdown of iPhone apps in each category. Paid apps still outnumber free apps. Of the 3,420 apps in the iTunes App Store, a full 2,604 (76 percent) are paid, and only 816 are free. (About the same ratio since the App Store launched). Games dominate (31 percent of all apps), followed by utilities (15 percent) and entertainment apps (12 percent).

Within each category, you can sort apps by rank, price, rating, or release date. And if you click on a specific app, you will get a chart showing its rank over time—something you can’t see in iTunes. For instance, Tap Tap Revenge is maintaining its early strength, and is currently ranked No. 8. The No. 1 free app is Air Sharing (which turns your iPhone into a wireless hard drive) shot up quickly in the rankings after its launch on September 8. In contrast, the No. 1 paid app, PocketGuitar (which turns your iPhone into a digital guitar) launched on August 26 and worked its way up more gradually in the overall rankings to its current No. 40 spot.

Last week at TechCrunch50, a slew of great companies were showing off their services in the DemoPit. And although not all of them were able to fully show off how their sites could work on-site, one company, MyJambi, was lucky enough to do just that.

MyJambi is a social marketplace where users can buy and sell services online without the use of anonymous service postings. Anything from childcare to cooking lessons is available for purchase on the site now, which is currently matching about 9,000 buyers and providers since its launch last week.

Once you sign up for an account on MyJambi, you have the option of either providing services for a set fee or looking for people that provide services you’re looking for. Once you find one, you can hook up with that person who will then perform the service.

Twitter cofounder Evan Williams (pictured right, with Tim O’Reilly) will certainly be invited back as an expert panelist at next year’s TechCrunch50 conference. in addition to taking a half day to judge nine of the launching startups, he wrote a long blog post today with his “day after” notes, saying “I find most of the implications of a product or company, if it’s really interesting, aren’t immediately obvious. You need to have some time to sit with it.”

It’s amazing how much time the experts spend thinking about and talking about the startups they see present. We are very lucky to get them.

TrueCar joins GoodGuide in helping consumers obtain more information about the products they buy - information that sellers don’t necessarily want them to have. In TrueCar’s case, that information is simple yet elusive: just how much you should pay for a new car.

TrueCar aggregates data from a variety of (mostly unnamed) sources to determine how much money other people have paid for new cars around the country. It then places its findings at your disposal so you can determine whether or not that dealership down the street is offering you a good deal. The outcome, hopefully, is that you save not only hundreds and possibly thousands on your new car but the time it would have taken to comparison shop as well.

The last company to present yesterday at TechCrunch50 was picked by the audience from the more than 100 additional companies vying for attention in our DemoPit. Every attendee got three TC50 poker chips that they could give to a DemoPit company each day, and the one with the most chips at the end of the conference became our 52nd finalist. This year’s winner was Iamnews, a crowdsourced newsroom with ambitions to one day take on AP and Reuters.

Iamnews is a news assignment hub for blogs and news Websites. It is a tool for crowdsourcing news. A blog or any Web publisher can use it to solicit submissions from citizen journalists—videos, photos, links, Twitters, notes, or full articles The Web publisher then takes all the submissions and pulls together the best ones to create a post or article..

Three jam-packed days, and 52 startup demos later, we finally have a winner for this year’s TechCrunch50. Every day, the presentations just seemed to get stronger and stronger. There were so many strong contenders this year that we are awarding five jury selection prizes, in addition to the top prize. But there must be a winner, and that winner is…Yammer.

Yammer is Twitter with a business model. Created by an existing company, Geni, to scratch its own itch, Yammer takes the familiar Twitter messaging system and applies it to internal corporate communications. There is such a huge demand for this type of service that 10,000 people and 2,000 organizations signed up for the service the first day it launched on Monday. Anyone with a corporate email can sign up and follow other people in their company. But if a company ants to claim its users, and gain administrative control over them, they will have to pay. It’s a brilliant business model.

Israel seems to be the country with the single biggest foreign contingent at TC50 with no less than 6 of the 50 companies presenting on stage. Some more Israeli startups can be found in the demo pit, the exhibition space and just walking around the venue floor shopping for investors, customers and partners.

Here is a round-up of the 6 Israeli companies that presented on stage:

There are countless travel sites available on the web that detail the best things to do in every major city on the planet. But with so many options, actually booking a trip is a major hassle: attractions may close on seemingly random days, or may require reservations weeks in advance.

GoPlanit is a travel site that aims to simplify this process by generating your schedule for you. The site features a database of attractions that includes their operating hours as well as an estimate for how much time each will consume.

Product transparency was a popular theme in the twelfth and last session of TechCrunch50, Research and Recommendations, with two companies in particular helping consumers make better purchasing decisions. The first, GoodGuide, was met with unanimous acclaim from the expert panel for its efforts to inform consumers of the social, environmental and health “goodness” of personal care products and the companies that produce them.

The GoodGuide founders claim that 60 million Americans wish they had more information available to them about the products they buy. So they put together a team of scientists and technologists, and compiled product information from hundreds of sources, that could be used to shed light on the lesser known aspects of products and how they’re made.

GoodRec is a web-based system for posting and finding recommendations from your friends and the world at large. The recommendations pop up on a map either in the browser or on a phone - specifically, in this case, the iPhone.

You can take photos of the locations or items or simply add a recommendation on the fly. You can recommend and look up multiple types of things including restaurants, books, bars, and other things that your friends could recommend.

The recommendations are extremely quick to create and show up in real time. Many of the current recommendations are restaurants although some are for movies and other media as well as wine and bars and nightlife. It uses Google Maps to show recommended locations.

Atmosphir is a gaming platform and engine that allows users to easily create their own levels in a 3D world by painting basic elements into a three dimensional grid. After downloading a client application, users can play in their own levels, or they can visit the Atmosphir community website to play on any of the maps that have been uploaded by other users. The application is currently available in a limited beta with plans to release by the end of the year, and is available for both Mac and PC.

Desktop music-mixing software like GarageBand has liberated musicians from the sound studio. Now Bojam wants to liberate them from the constraints of geography or the isolation of their rooms. Bojam is a Web-based sound studio that lets musicians practice playing music, find other musicians around the world to jam with, and lay down tracks together on the same song.

Bojam is a fully functional music mixer. You can adjust the volume on each track or add effects like distortion and reverb. CEO Andrew Greenstein claims that Bojam has “all the advanced features you would find in a studio recording mixer, but all on your browser.” During the demo at TechCrunch50, he showed how a drummer in LA, a bassist in Tel Aviv, and a keyboardist in Tokyo recorded a song together on Bojam. (Unfortunately, the song they chose was Toto’s “Africa”).

The first two companies to present at this afternoon’s Vertical Social Networking session proved that niche social networks can be exciting, even for people outside of their respective niches.

On paper, a social network for bird watchers sounds like a joke. But the founders of Birdpost wowed the TechCrunch50 audience by presenting not only a very well-designed site but one that thoroughly addressed a real problem for certain people, that of locating rare birds. Like Wikipedia, Birdpost intends to unleash knowledge traditionally locked up in the heads of a small group of experts. While in the case of bird watching the group is highly focused, the founders insist that 45 million Americans would actually be interested in their knowledge.

Shattered Reality has released Kaos War, a multi-player game with absolute transparency and social network design functionality which allows the players - not a bunch of overpaid and overfed game designers - create future expansion packs and levels based on player requests.

Causecast.com is a philanthropic site that brings a number of major figures in politics and entertainment together to pitch and bring attention to 10 non-profit companies a month.

Video search is an unsolved problem. VideoSurf applies hardcore computer vision technology to this problem and finds relevant results beyond what may already be available to text-based search methods. In the demo at TechCrunch50, the startup showed how you might want to search for a scene in the show Entourage. You can drill down to the show, and then are presented with thumbnails of all of the characters, left to right at the top of the screen by level of importance. By clicking on a character, you get all the scenes in which that character appears, as well as related scenes.

Grockit, the mysterious online learning site that has been operating in stealth for the past year and has raised a total of over $10 million, has finally revealed itself to the public, and it doesn’t disappoint. The site calls itself a “Massively Multi Player Online Learning Game”, taking gaming concepts that have made World of Warcraft a massive hit and applying it to what amounts to an online SAT study group.