Fun for the free month that I played but I chose not to sell my soul.
Mentoring (temporarily become the level of the person you are grouped with) is interesting and nice if you have high level friends who would like to play with you if you are just joining.
The large number of classes, races and trade skills to pick from is nice.
Fellow players were fairly nice and helpful, more mature for the most part than in other MMO's I have played.
A lot more depth than other any other, but that was not always a good thing.
There were many little things that I liked and were well done that I can't particularly think of at the moment.
Trade skills were overly complicated and too time consuming. You could log on and spend two hours doing nothing except making food. Even making grey items (trivial, worth no trade experience) takes constant attention and button mashing.
Spell upgrades were confusing, not only are there something like 8 upgrades to each spell but the spell also keeps changing names every few levels so you have to upgrade it again under the new name.
The number of items I was able to auction being severely limited by how large a bag I could afford was irritating.
The maps are crappy and practically require a mod to be of any use.
The talent system was apparently tacked on across multiple expansions and feels like it was too.
Overall I had fun and it's a pretty well done game, but too time consuming even for simple tasks and complicated if you don't want to spend every free minute of your life playing. I played a ridiculous number of hours for the short length of time I had an account, too much by far.