@donnacha of WordSkill - I agree completely. I think that if anyone were to ever buy WordPress, Facebook would make the most sense as a suitor.

Google has Blogger, Microsoft already got out of the blog game when it transitioned it's Live blogs to WordPress... FaceBook doesn't have a blogging platform. That isn't to say they couldn't purchase one, but then again they could just buy Automattic and merge both WordPress.com identities and Gravatar's into Facebook single sign on.

They would make the most likely buyer in the current technology landscape and they have the financial means to pull it off.