Tom Coates writes as concise a definition of good social software as I’ve seen, and one I want to come back to for Londonlist:

*Every individual should derive value from their contributions
*Every contribution should provide value to their peers as well
*The site or organisation that hosts the service should be able to derive value from the aggregate of the data and should be able to expose that value back to individuals

This entry was originally published at my workblog.