Dreamhost costs about $50 a year. That's not a lot. Of course, it's not a turn key solution, but I'm sure they'd support one if it emerged. Getting people to p

Dreamhost costs about $50 a year. That's not a lot. Of course, it's not a turn key solution, but I'm sure they'd support one if it emerged. Getting people to pay for an otherwise free service might be tricky, but I'm sure google would foot the bill (and do the hosting) if they got to push more ad-words. It will probably go: self-hosted and hosted (by techies), then big companies find a way to do the hosting for non-techies in order to push ads. Movable identities - DNS works. A DHT with email-addresses as the primary key (rather than domain names) would also work (though you would need some karma ratings system to keep it from being hacked). You would either use DNS, or reinvent a DNS-like protocol. No big deal.