Ken MacLeod’s built an HTML Tidy service with Atom and RSS in mind. You POST markup to it, and it returns well-formed XHTML ready to insert into an Atom or RSS feed.
Compare with L. M. Orchard’s HTML to RSS service, which uses GET as part of a pipeline to clean up HTML.
Deleted: snark about Live Journal users and Regis Philbin. However, I’d suggest that tool developers stop wasting cycles supporting users who want broken markup, or can’t be bothered to understand one or two rudiments of XML. It’s markup, not MS Word.
