Set up's a bit confusing (bet you didn't know that you already have a PicasaWeb account if you're signed up for Blogger) but it beats Mail-to-Blogger for posting photos. Tip: tap a photo for size and alignment options.
Since the app is a birthday present, I thought I'd post a picture of our cake.
Since this is also a blog, here's a picture of my cat:
Edited from the iPhone version to remove some blank lines, add the iTunes link, and include this message.