Maybe we need some kind of open specification for "the living web" so companies like tripod/angelfire can support the spec.
Maybe where you would sign into your own site and it would have polled posts from all the sites you follow (probably with rss) into a single feed. Your site IP is your identity, so commenting etc would be done as your site e.g., `MentallyRetired.com says: Hey these are cool!`
I dont know, just shooting from the hip, but it seems a lot of these technologies are possible. I remember signing into places with my website.
But it needs to be EASY. As easy as Facebook. And backwards compatible to avoid breakage.