I don't see why this would be the case with tumblr...I mean it's a blog, not a communication tool. Why couldn't the company just get pitchforkblog.tumblr.com a

I don't see why this would be the case with tumblr...I mean it's a blog, not a communication tool. Why couldn't the company just get pitchforkblog.tumblr.com and then just forward the A record for blog.site.com to it?