Epiphany moment on the train home today. Take a bunch of media objects, a collection of digital photographs say. Make each one a microblog (riffing off of Don Park's idea of Micro-Wiki's) by having it support the RESTLog API, in addition to its standard representation.
For example, each image can be served as a plain old image, but you tweak its URL a bit and you can post to it. Do a get from another tweaked URL and you get back HTML. Another tweak, and you get the RSS. You can also make each object support TrackBacks for two way linking and annotation.
Now build all sorts of tools using standard Web and WebService toolkits. Mayhem ensues.
Gotta get to work.