A somewhat contentious software developer, something like RMS, but in the personalization and weblog field. Responsible for a precursor to RSS, weblog hosting, content distribution, forum software, and a bunch of other interesting ideas such as scriptingNews, userland and editthispage. He is generally focussed on promoting individual, non-commercial content and online communities.

Is also like RMS in that one reason he's famous is because of his ego and tendency for quarrelling with Tim O'Reilly.