Imgur can hold up to 20MB of JPEG.
Consider the average resolution for a picture taken from even the cheapest phone.
This was downscaled to hide bad work. The same reason it is a photo. The same reason it is at a slight angle.
If you want to reread all the crap wrong with it you can do so here:
http://www.mmo-champion.com/threads/...1#post47682370
As Scornedfury pointed out, the bottom highlight on the letters (cyan) looks like it was badly done in MS paint because it is so low quality.
The only good thing about this logo is the chain, and even that is poorly thought out because the wow logos are very intricate. Everything else is pretty much just copy pasted from old logos except the seaweed, which only looks good because you can barely make it out at that resolution.