During our recent Spoken Word international workshop I had a coversation in passing with Mike Fegan about the inadequacies of the two RRS standards. Did not have time to pursue it but I am not the only one who has thought about /usr/lib/info || Comments || OAI for Blogs. This is only one of several links where the issue is being raised…
I am wondering if blog entries would be useful in an OAI repository exactly as you describe. I wouldn’t see it replacing RSS readers by any means, but it could help deal with the large number of blogs that look interesting when you start to max out on what you can check in a day. I have no idea how trivial or how hard it is to add OAI to any of the popular blogging options like Moveable Type.