If Google Base lets you tag entries, you could easily create a podcast feed by just uploading MP3s and giving each the same tag. Likewise, you could create a blog by uploading text entries with the same tag, and a vodcast with videos. Google could easily offer a wiki interface to let you manage all your content, and a feed to go with it.

From a programming perspective, what’s nice about all this is the prospect of a common API for all sorts of content.

So while Craigslist ought to be watching closely, so should many others. This is Google’s answer to Flickr and just about everyone else who’s hosting microcontent.