"... With FriendFeed, you list the people you want to keep in touch with ..."
Without having looked at the beta, have you solved the "Damn I have to enter my friends list again!" problem? This was a PIA with twitter (insert N other apps) and is a dampener on joining other sites.
I have an idea: a website that just keeps a friends list. OpenID-compliant, no additional functionality. Open API. Everything else feeds off it.
No money-making strategy, though. Maybe it should just hide under the umbrella of an already successful megacorp who wants to use it for their own service, like Yahoo or, like you mentioned, Facebook.
Without having looked at the beta, have you solved the "Damn I have to enter my friends list again!" problem? This was a PIA with twitter (insert N other apps) and is a dampener on joining other sites.