Absolutely agreed. I emailed Gary recently saying that I didn't think Posterous had enough to really compete with Tumblr. But something like this doesn't just change my mind (regarding Tumblr posts, of course) - it's genuinely a very useful feature. Well done.

I think this is great. Very valuable feature that puts them a bit past tumblr in one sense. I like that they're not all about competition, and are giving users tools they want to be happy.