Select coffeeshop from * where town=...
Doc Searls: Hey, coffee and wine shops, I'll be in town for the next day with a laptop and a PDA that are wondering who's ready for my business ?
This problem doesn't seem all that much harder to me than syndicating and aggregating weblogs. In particular, both ends of the equation are likely to be behind a combination of firewalls, NAT, proxies, etc. Question to ponder: what technical, sociological, and legal innovations will be required to make this come about?
One interesting thing this scenario highlights is the potential need for multiple credentials to be transmitted along with the request