I think 30 Boxes has finally done it. They’re releasing their product on Sunday as a beta but check out this quote from their site and then see this screenshot. This sounds like it will be really cool.
30B is also a handy way to passively communicate by letting people know where you’ll be or where you’ve been as well as a DLA (digital lifestyle aggregator) gluing together all the pieces of your online presence (e.g. photos, blogs, myspace, and the like).