I posted an RFC this evening for an RSS 2.0 module that facilitates geolocating an RSS feed or a specific item in a feed. It can be applied either to the <channel> level or the <item> level. I personally think that using it at the <item> level would be really rewarding. The full details are at the RFC, but here’s a quick sample of usage from within RSS 2.0:
I have posted a validating example of an RSS feed using this module. The idea is an extension of GeoURL and I remember someone saying that they’d like to attach coordinates to a post a few days or a week ago, but I can’t remember who it is.