By talking to them a lot on sites like Blurtit or Facebook or even Skype. I've gotten to know quite a few people that way. We've exchanged pictures and even talk on the phone some. It takes a little more time because you can't see that person to tell what they are really like but it's easy to do. I have a bunch of Internet friends as of the moment. All nice people I enjoy talking with. So, make a few friends here and go from there.
It's actually kind of fun.