Diigo for me is the knowledge-management solution I was looking for.

What sets diigo apart is that it handles *Knowledge*, rather than mere links.

It is the ONLY solution that lets me *permanently* highlight and annotate specific text on a webpage, which is then saved to my diigo profile.

Diigo complements the mental process in which a sentence “jumps” at you, and you make a mental note about it. By highlighting the sections I deem important, I better understand and remember what I read. I believe there is scientific proof for this.

As time goes by, I’m building a repository of all the important Knowledge I find on the net, which I can easily manage, tag, retrieve and aggregate.

Regarding the ’social’ aspect:
Diigo provides me immediate personal benefits, and I can then share this knowledge with others of my choosing, and follow what other individuals or groups are finding on the net. Not just the pages(links) they are browsing, but the actual sections that they deem important, and their reactions to it.

I think that Diigo is not only for ‘researchers’.
Most of us conduct some sort of research whenever we read a news article, shop for an appliance, view photos or videos, or read a blogpost.

Although I appreciate the other services, and might occasionally use some of them, I find that Diigo already incorporates and combines MOST of their important features, in a way that is more robust and scalable.
Diigo specifically addresses the issue that was mentioned in the introduction of this tech-crunch comparison - mark up the web and make annotations on webpages.

as Dan mentioned this generous coverage has instantaneous got us or radar. I believe that many of the services noted in this review and some of the in the comments are more advanced than what we currently have to offer with ShiftSpace. But there is on inherent difference which we see as pretty major.

ShiftSpace is aiming to be to interface what Wikipedia is to encyclopedic definitions. And it is indeed the only open platform proposed here. Not all of the users are very sensitive to that but we do think that one of the main reason most of the previous annotation applications failed is lack standards and a conflict of interests between users and service providers that ended up in compromising user’s data.

ShiftSpace is aiming to build a scalable distributed architecture and a standard that will make it more of a protocol for metaweb apps than a single centralized service. A protocol to then later be used by other metaweb apps like the ones listed here.

The feedback we’re getting and this discussion specifically is very helpful for us as I’m sure it is for our colleagues from the other Metaweb apps covered here.

We’re looking forward to achieve a point where we not necessarily compete but can share resources and standards and work together to finally make this great potential for a metaweb to come true.

thanks,

Mushon.

We do allow you to export your data. The chance of us disappears without giving users a chance to export data is nil. To insure your data will always be there, we even do backup off-site.

Incorporating social networking into note-taking will provide benefits — perhaps — but I prefer that these two functions remain disaggregated.

Then, even though I consider web annotations a useful feature, a Web service that offers this feature alone or focuses almost exclusively on this feature is not really useful - at least to me. Diigo (http://www.diigo.com) is the only service that offers the whole package. Let’s say you read a printed book/journal/magazine. Would you want to have to use several copies of each, that is one for bookmarks, one for highlighting, one for annotations, etc.? I suppose not. Diigo provides everything you need for Web research and annotation in one single place.

Diigo does have lots of features but I would definitely not call it bloated. To me, “bloated” implies bearing so much functionality in a way that complicates usage and impairs performance. This is not true for Diigo. Even with its many features, Diigo remains easy to use.

Will Web annotations become a medium for providing information to many Web users? I don’t think so. I suppose that Web annotations will mainly be read by active Web annotation creators. I don’t think many people will install an extension or use a Web service just to read the comments/annotations of other Web users. In other words, the percentage of passive participants in Web annotation will probably be low.

Too bad TechCrunch didn’t decide to write this article about web annotations a month and a half later. Otherwise, I would hope that we were on it because I think Artoo is in the same product space but does web annotations much better….

http://drawhere.com/

Indeed, Diigo’s annotations are viewable in all the major browsers — a feat that is unmatched by any other service at this point (correct me if I am wrong here).

Again, click this http://srl.diigo.com/11xq to experience it now.

I fully respect your vision for Diigo as a social annotation tool and wish you the best of luck.

Although we would like to make JKN easy and pervasive enough for more than 10% of users to create annotations, 10% is probably a conservative estimate. However, our vision is predicated on 100% of users will experience annotated web pages as a reader. For this reason, we are positioning JumpKnowledge as more of a personal annotation tool and not a social annotation tool. This allows us to focus JKN and make it easy as possible to use for non-technical creators and readers.

Yaakov Sash
JumpKnowledge
http://jkn.com

Indeed, web annotation itself is not for 90% of the users, and is likely to be adopted only by the minority of the web users who consume information diligently. After all, everyone knows that having a pen and a highlighter while you read is really helpful for digesting and retaining information — but how many actually do it?

For the minority of the users that do make use of web annotation, our user feedback tells us Diigo’s other features are quite appreciated. In addition, the Diigo plug-in is completely customizable, allowing users to only keep the features they want

Re: Raja above

the main difference between the 5 services reviewed here and social bookmarking sites you mentioned is that the former allow persistent mark-ups on the webpages

Regards