It's a tiny request, but it would be a real convenience to be able to add a bookmark to multiple lists at the same time. Right now, the drop-down list of lists only allows selection of one list. To select another one, you need to save the bookmark and then click on "Bookmark" in the toolbar again. At that time you can add the additional list to the bookmark. Why not enable "Shift+Click" in that drop-down list to enable selecting as many lists as desired?

On many sites I see a "Share this site" link, which gives the opportunity to share the page to other sites, like Facebook, Digg, Stumbleupon, etc. I often see Delicious.com as an option, but I rarely see Diigo. In fact, this site http://www.usabilitypost.com/2010/05/06/a-symptom-of-clutter/ has 52 places to share, but Diigo isn't one of them! So I'm wondering, what is Diigo doing to increase its presence as a share-point? I would think that being able to bookmark by clicking within the article itself would increase Diigo's presence and popularity. (And yes, I have Diigo toolbars installed.)