Logo_launchDiigo is about “Social Annotation”~ the best way to collect, share and interact on online information from anywhere:

Highlight, Clip and Sticky-Note for any webpage
just as you would on paper –> write on any webpage!
make them private or public –> interact on any webpage!

Share your online findings with your friends and colleagues
complete with highlights and sticky notes
as lists, as blogs, as albums, as feeds, or via email

Diigo makes it easy to:
collect and compile your research findings
provide feedback on web design Example
make wishlists Example
plan vacations Example
comparison shopping Example