I totally hear you man, knowing that a post has gone through a revision process by someone other than the author is very artificial, not to mention it pretty much goes against the definition of a blog. Like you said it's marketing and you have to take that with a grain of salt

...funny thing though is that I've worked on one of these corporate blogs.

I've got one more thing to say but we're leaving to go to some losers' housewarming party so I'll write it later.