As they say on the Web site, “Diigo is about ‘Social Annotation'”. To define that for you, they later say they are, “the best way to collect, share and interact on online information from anywhere”. With a tool of perfection like this, they have to be packing a Firefox extension.
Here is what the folks at Diggo have to say about the extension.
Several powerful features are combined in the Diigo toolbar to make this a real “power extension” and must-have for anyone who browse a lot of stuffs online. An All-in-One Bookmarking Tool: bookmark to Diigo, delicious, Simpy, furl, spurl and make them permanently cached and full-text searchable. A Powerful Blogging Platform : Annotate webpages and quickly turn them into blogs with a built-in blog editor or enhanced linkrolls. A Great Collaborative Tool: share and interact on online findings, complete with highlights and sticky notes. The Most Customizable Search Tool: like Google’s toolbar, but fully customizable, so you can add any other specialty searches – dictionaries, music, movies, references, and maps.
Here is a comment I found via the Mozilla Add-ons Web site that I think fits Diggo perfectly.
Diigo is the best bookmarking tool that I’ve tried. And this extension is a must! You can bookmark a page right from your context menu, which includes highlighting parts of the page when you bookmark, and you can also forward a bookmark to someone.
I don’t even keep my bookmarks in my browser anymore – I got tired of looking at 100+ jumbled bookmarks in my browser, so now I use the Diigo extension to retrieve them. I like being able to bring them up as-needed, but the rest of the time they’re stored at my Diigo homepage.
This Firefox extension is for versions 1.0 and up of the browser. If you want to download it and try it out for yourself, you can do so at the Mozilla Update Web site.