Final Fantasy XI is a good game, or at least it was 2 years ago. Nicely done graphics, a lot of jobs to level, from warrior to dancer, and many many missions. The music is pretty good too.
The craft system is good, but requieres a lot of money and the ability to travel from city to city.
However, this game is too slow, and will take months ( sometimes years ) before you achieve anything, like taking the job to its max. level, completing any of the expansions or completing a set of equipment , which is just frustrating and not enjoyable. Keep in mind that this game requieres a lot of time.
I think that its important to stress this enough because this game is not like Wow, where you can solo your way to 70, then make a group and get things done fast. You need a lot of people in FFXI to do anything!
This game is already too old to start playing. New players will find themselves in a very big world withouth people to play with. It's nearly impossible to find parties to level up at lower levels 10-50, ( I would say that 85% of the server population is high level with many jobs leveld ), and of course, there's no other way than partying and making groups to gain levels( you need 6 persons to make this possible). Soloing is out of the question, is just atrocious, and much worse for newbies.
So my final words are stay out of this game, or at least buy the 6 € trial for 30 days, and then decide if you want to waste your time with this game.