Free MMO that let's you see how good you are and how good can you be in the future!!! COME CHECK IT OUT!!!!
http://lostsaga.ogplanet.com/
After trying hundreds of MMOs and not finding the right one to get deep into it, I found myself in a really cartoonish fighting multiplayer game that makes all other MMO garbage; Ogplanet made this game free (of course with some purchasable items) and fast to download, install, and update.
This game requirements are minor so if your worry because you think you computer is crappy and don't think it will run just install it,
if for some case something doesn't work you have a helpdesk that you can send a message to them and right away they will send you a tip to stop it or to completely fix it.
Also this game doesn't occupy much space is only 300MB(megabytes), excluding the updates, but that's the good thing, the updates are not much of a size.
Good Luck Trying it!!!!!!!!!