del.icio.us

Although I am using this to store bookmarks with my own tags I find it a little tedious as it's another thing I have to sign in and out of.

I think I would rather attach links to my blog or facebook or Library thing or whatever site I was using the most. Certainly discovering what others with similar interests are accessing is good but Library thing and the Netvibe aggregator are probably enough.

If I was doing large amounts of research I think I would use it.