It's free!
But free? Hell ya, I'll play this when i have a fixin' for an MMO.
The game is much more fun when you are with a group, but even solo can be fun.
If the game was not free, I'd give it a 6 or maybe a 6.5.
Everyone should give this game a shot, you have nothing to lose anymore, except some download and installation time. Which by the way, will take a long time. I have a very fast Internet connection... and it still took hours from start to finish.
The graphics feel a little dated these days, even with the high res downloaded. I wish more games choose a style more like World of Warcraft, which ages gracefully. Trying for realism is one of the best ways to make yourself look old fast.