Diigo is a powerful information capturing, storing, recalling and sharing tool. Here are just a few of the possibilities with Diigo:
Save important websites and access them on any computer.
Categorize websites by titles, notes, keyword tags, lists and groups.
Search through bookmarks to quickly find desired information.
Save a screenshot of a website and see how it has changed over time.
Annotate websites with highlighting or virtual "sticky notes."
View any annotations made by others on any website visited.
Share websites with groups or the entire Diigo social network.
Comment on the bookmarks of others or solicit comments to your shared bookmarks.
Via Karen Bonanno