Well, there are a couple fan-made MMOs in the work, but I'm not so sure how the progress is coming along with any of them. As for making one yourself, that takes quite a bit of skill, knowledge, and time. :x It's not as simple as creating a game. However, I'd suggest checking out the Game Development board either way. If anywhere, that's where you'll find threads about such projects. Just make sure you read the rules there first.
As for this thread, it's not much of an introduction - more of a question, really. Since I went ahead and answered it, I'm gonna go ahead and attach a lock. Good luck!