Bookmarking Icon Status
The Diigo toolbar reflects the status of the webpage you're currently
visiting. Here's how: The Diigo icon on the toolbar changes depending
on the webpage you're on.
If the webpage has not been bookmarked yet, you'll see the usual icon:
If the webpage has already been bookmarked by yourself, the icon will look like this:
If the webpage has been commented on (by any Diigo user) but you have not
bookmarked yet:
And finally, if the webpage has been bookmarked by you and has been commented on (by any Diigo
user), the Diigo icon will look like this:
So when you're visiting a webpage, you can quickly see at a glance whether anyone before you has shown some interest
in it.