Haven't posted about it here, but I think its worth reading. Like Tavi said, there are some parts that are a little bit on the slow side, but I liked it from a pacing stand point and it was a quick read.

My biggest complaint was that the magic / magical elements were kind of underdeveloped and overly convenient. They came through based on whatever the current situation needed, but there are a lot of lingering questions about why and how stuff happened (especially in the second 2).

All in all worth checking out, but not if you're looking for something extremely deep.

I will give the Black Prism a try when it comes out. Sounds a little bit like Warbreaker though, with the color emphasis in the magic system.