I just unsubbed last week, but the game has its good points and its bad points.
The game follows the same gamestyle as a WoW up until about level 20ish. You just quest, fight mobs, deliver things, run all over the place talking to people and it gets a bit old. Alot people quit because it has the same MMO philosophy until lvl 20ish and people are like "been there, done that, lets move on or stick with the old game."
However, after 20 things become more interesting. The idea is that there are "white guys" and "black guys" (not racial, we're talking wing color) where they can PVP each other, so its a good vs evil but nobody is more good or evil than the other. Once you hit the lvl 20 area, you can start rifting into the other people's land. A rift is a break between the black and white lands. While in the other lands the other players on the other side can attack you and vise versa. This leads to some interesting PVP... When rifts are up, you have people who defend the rifts (so if other players come through, they can be attacked instantly) and then you can go in with a group into the other lands and attack them.
There are also spy quests. Those are quests which you have to do on the other side while rifting, and you can get some decent rewards and titles for doing them (which give you stat boosts, etc)...
Once you hit 25 you can hit the abyss, an area where you can gain abyss points, abyss points allow you buy really nice equipment, which most have defenses against the other sides players. In the abyss you can get abyss points fighting monsters or with PVP. You also gain abyss points fighting players in each other lands when you rift, but you don't get abyss points by rifting and killing NPCS/mobs.
There are also forts in the abyss, when a player's team controls fort (killing the NPC bad guy) grant you bonuses, and the abillity to fight in abyss instance dungeons, which allow you to get abyss points from mobs without being killed by PVP... So your team wants to control the forts in the abyss. There are huge battles to do that between the two sides, this is a mix of PVE and PVP because th
(sorry the rest got clipped, sucky air card lagged out, i'm not going to type up the rest again