Any hints on web annotators that support other formats that HTML, e.g., PDF documents? I guess Webnotes is one of them, but this is a paid service

Kind regards,
Bart Du Bois.

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.