Thing 6: Post an entry on your blog saying what your impressions are of Diigo, or any other tool mentioned this week, and why you think this tool might be of particular use to researchers, academics or clinicians.

I've never used Diigo before and liked it more than Del.icio.us, especially the highlighting option and the chance to add comments. Not sure how/whether I would use it at work, though. For academics or clinicians, sharing websites within a group like this could be useful for current awareness or CPD.