Seems to me that every node would have to be both server and client, since we need to connect a person's digital profile with their control of the server that h

Seems to me that every node would have to be both server and client, since we need to connect a person's digital profile with their control of the server that handles their profile -- open source at a local machine. (Stallman said something like this in his article.) Seems like everything hinges on caching and timestamping and digital signing (again, not my ideas). Such handwaving might help solve the scalability problem; how we solve privacy, I don't know -- seems like once a profile has been read, there is nothing to prevent that reader from caching and propagating it however they please. It could be unsigned, but I am sure a thief wouldn't wait to confirm that someone's account password was signed... Anyway, this is cool, ... I hope someone works on it for me ;)