Social Bookmarking Question

1. What is social bookmarking? Social bookmarking is things like facebook and twitter. They are very popular and mostly used by this generation. Social bookmarking is also used for fun.
2. What are the benefits? The benefits to social bookmarking is is to find out things that you didn't know. Also, you are using these social bookmarking to keep in touch with friends.
3. How could you personally use it? I use it for fun and to see what's new in peoples life. Mostly cause i do nothing too.