Session Proposal–On organic, breathing info management

I propose a session on organic, breathing info management: how can I build a database in which

1. a lot of people can upload and refresh information on a regular basis from anywhere they wish,
2. and their info goes into ‘cool storage’ if they haven’t touched it in, say, a year; and all the way out of the system in two years?

I envision this as leaves on a tree; each person is a green leaf. The leaf turns yellow and then drops off if the leaf stops talking to the tree.

Pei-Lin Yu