Facebook is a "site" where you can meet new friends and get in touch with your old ones. I think it is good because, well, you can stay in touch with people (especially if you don't live in the same country as them!) Here is an example of this:
- You were best friends in elementary school.
- You go off to different High Schools because you move to different countries or states) and make new friends.
- During or after High School you suddenly remember that person and wonder where he or she is and what they are up to.
- So you search their name on Facebook and find them.
- You send them a friend request and they accept it (provided they have Facebook).
- Voila!! You are now in touch with your old friend!
- You now chat with them every day or couple of days.
- You can send friend requests to your friend's friends and get to know them.
- Soon, you have a big network of friends!!!
If you plan to get on Facebook, have fun!! (its free by the way)
If you don't, well, then its your loss.