Friendfinder.com was established in 1996 and now has over 18 million registered users, and you can use this site to find romance, love, or just a group of friends to hang out with.
They have an online magazine made up by the members for the members (a pretty cool feature)! A Hotlist that can be used to track those folks you are particularly interested in, and your own personal Cupid, who will notify you by email when someone fitting the description of who you are looking for registers on the site.
You can sign up for the Social Network which is the just friends part or you can go over to the Dating and Romance Network when looking for something a little more personal.
There are three categories of membership: Basic (which will allow you to browse the site), Silver and Gold which will allow access to members info, and will let you send and reply to messages, access the magazine, and access to members instant messenger ID's.
The basic is free. It's $100 USD annual for the silver membership and $150 USD for the gold membership. There is also an option for a smaller membership: $22.94 to $34.94 for one month of the silver and gold respectively.
Friendfinder.com is part of a network that has over 18 million members so there is plenty of people to hook up with no matter what you are looking for.