No, because it's not technically supposed to be a social networking website. This is a Q&A website.
if you are a adult it would be facebook but if you are a child it would be aim
Yes. YouTube can be classified as a social networking website, as it offers users social networking-type services (among other types of service).
Facebook, MySpace, and Twitter are three of the most popular.
The Poptropica site does allow limited, anonymous interactions between users in their multiplayer games. The introduction of "private rooms" within the site (the Multiverse) will no doubt increase...