What are some good social networking websites?

There are tons of sites but it's important to know what kind you're looking for. Facebook and MySpace are good if you want to connect with existing or past friends. Match.com and eHarmony require a paid membership and are for finding romantic relationships. There is also a brand new one out there that's dedicated to meeting brand new friends. It's called Frucle (http://www.frucle.com) and it connects people together based on interests (like the dating sites but for friendship) without charging for memberships, and then it gives you coupons to places that you and your new friends can meet up.