So we have an actual RSS validator now, brought to us by Mark Pilgrim, Sam Ruby, Bill Kearney, and the Internet Archive. It's even open source. I mailed Mark about the ag prefix thing after trying Simon Fell's feed mentioned on the radio-userland list.
They're polling for which "Valid RSS" image to offer. I picked Dylan Parker's #2, because it has a checkmark like the HTML and CSS ones, but keeps the same orange and font as the standard "XML" button already in use. Aaron Swartz's offering looks good, but emphasizes the identity of the RSS validator over the identity (ha) of RSS. For pure beauty I liked Brockman Bulger's image. The RDF molecule would've looked good, but "valid RSS" isn't only the RDF-based RSS 1.0.
The terms of use said this morning in the last, "You may not send automated queries to this service" part that a SOAP interface was coming and you could use that. Now it says to just get the source code.
