This is a great idea. The target market for those who can't see it is - non-technical people. Our parents, siblings and friends... They don't have to deal with some crazy blog interface. They can just use their already familiar email interface and email posts directly to post@posterous.com. And on top of that it integrates with flickr, twitter and legacy blogs.

If you can't see the potential then you are either 1) in a family of all engineers and scientists 2) have no non-technical friends 3) don't see what it can do for YOU... their is a world outside of news.yc.