News just in to me that a large network of destination related exact match domains [ probably 1000+], including many premium ones [ probably 50+], ultra optimized with unique content and only average quality backlinks with perhaps overkill on exact match anchor text, has been hit.
A few of the premium one's have escaped. Not sure if the deeper long tail network which were exact match have been effected, but they would have had little traffic.
The sites were built for pure ranking purposes, and although largely white hat, didn't do much beyond what other sites in the category do.
This is a classic case of building for SEO purposes only.
Anyone else seeing exact match domains being hit? I'm thinking there has been some tweaking in the authority ranking element for some.