2. Sidebar- The diigo sidebar (accessible by clicking from the toolbar) lets you access all of your bookmarks wherever you are. No need to sign in at the diigo site to get your stuff. It’s right here in the browser.
3. Group Voting and Tagging- Though I do not use diigo as a collaborative annotation and research tool, this release of diigo has new team research capabilities such as the ability for a team to vote on an item (digg style) and a Tag Dictionary, allowing all team members to agree on common tags for items.
4. Social Browsing- While browsing the web, use the toolbar to see what people have said about the site you’re on. Through the same sidebar, you’re also able to see what other readers have bookmarked and/or commented on a page (by clicking the This URL link). In addition to showing which diigo users have bookmarked the page, you can see a list of users that have bookmarked any page on the site, and you can read their comments from the sidebar.
5. Content Discovery- Diigo is starting to focus more on becoming a source of content by improving their recommendation and discovery functionality. Users can discover content through their friends and by diigo’s matching feature, which looks for content similar to your own bookmarking activity.
6. Share Outside of diigo- Like the "Twitter This" box above, you can share your bookmarks with people outside of diigo. Currently the options are sending by email, adding to facebook, and sharing on twitter.