Do you talk to much??
If you like to talk a lot, then you probably wont have any friends, same with not talking a all, you will think your crazy. I hate it when people talk a lot, its like i want to pull my hair out of my head. A silent people are frickin stupid, you ask them a question and they just stare at you.
If you talk when needed spoken, then thats a good thing, you probably have a lot of friends and the most popular guy in your school/work. Keep it up, you will hve a lot of friends, just dont stop talking and dont start talking a lot.