This can also backfire. I have a friend who hired a very well known developer to work on their startup in large part for PR reasons. The product had already been developed and was doing well, but he wanted to expand his team and gain more mindshare in the developer community.

Long story short, when things went south, this "A-list blogger" took all the credit for the companies success, and made a big stink about it, airing his dirty laundry in public, which was all anyone ever heard about it because he had a legion of screaming fanboys to spread the dirt even though not one of them had the slightest clue what really happened.

Judging by the post he has more of an anti-PR talent.