You bring up a point of wordpress blogs having poor results in relationship to being in supplimental results....but that is based upon wordpress sub-domains.

Just because that happens there does NOT make using wordpress software a bad thing.

I also agree with lotso that wp is a target for hackers, but I also know there are ways to better secure it. (I would like to discuss this privately with someone who has experience securing wp on windows servers, since I could use some direction on a list of best practices etc...)