You need to be very careful with the internet and making friends. But if you do find someone that's honest you can have really good friendships. There's a girl on another site I go on, we've been talking to each other for over a year and a half. (She has social phobia and depression, though the site's not for social phobics.) We know practically everything about each other and don't hold back on what we say. I can honestly say she's the best friend I've ever had. I wish I knew her in real life, but then I know that in real life I'd be awkward, and shy, and would hardly speak so...
I've also spoken to a few amazing people on this site. People that I would like to be able to class as friends, although I've only spoken to them a few times. (Rare for me, I didn't class the other person as a friend until we'd spoken for 4-6 months, I just don't trust people very easily)