Advantages of social networking websites?

You can advertise your product there. you can promote you Bran there.

I find it very useful for keeping in touch with friends from all over the world. It is also a very helpful toll for finding distant relatives and old friends.

The advantages of social networking sites are that they allow you to keep in touch with people that you would not on normal circumstances such as old High school friends, old coworkers and even some...

No, because it's not technically supposed to be a social networking website. This is a Q&A website.

Yes. YouTube can be classified as a social networking website, as it offers users social networking-type services (among other types of service).