lol. Funny you mentioned this now. I played FFXI Online for about 2 years but it got too time consuming so I quit. I'm bored now, so at this moment I'm re-installing FFXI to my PC. I'm not sure if I can get back into it though. FFXIV is coming out later this year, and it's going to be an MMORPG. FFXI is a good game, but you have to dedicate TONS of time to it. I like it because I'm such a hardcore fan of the series, but not everyone can get into it. You can't really do anything on there in a short amount of time, but their looking to change that in FFXIV. If you really want to play one, I'd wait until FFXIV comes out later this year.
FFXI site (There is a free 14 day trial you can download there)
There's only one, and I spent nine months playing it last year. That's all I did. Wake up, play it all day, go to sleep. Only play it if you want to sell your life to it.