Social bookmarking is like a quiet, clever sister among her fancy Web 2.0 siblings.
1. Diigo is fun! It is my absolute favorite.
2. Delicious is owned by Yahoo. It is by far the most popular social bookmarking tool out there, but it is not rich in features.
3. Furl is part of the Looksmart family and has been around forever (like Delicious, Furl launched in 2003).
4. Mister Wong is developed in Germany and is Europe’s largest bookmarking service.
5. Simpy is another old-timer in the world of social bookmarking
