I don't know if this is the right place to discuss this, but what the hell.
I run a web design company and I deal almost exclusively with WP builds. A guy I do a lot of work for has recently told me that a reliable source in America passed on information that Google is somehow attacking any website built in wordpress and would be steadily de-ranking them just because of that.
Personally, when I heard this, I thought it was wrong. It makes no sense! I think the possibility is that Google de-rank sites hosted directly from wordpress.com because of spam - that could be the mix up.
Anyway, just wanted your opinions on this and whether you guys have heard anything similar?