Christopher Harris at Infomancy has had a good idea, converting RSS into MARC. He had in mind taking the RSS feed for the Librarian's Index to the Internet (LII) and using XSLT to change those records into MARC. It should also work for the Scout Report or any of those type of sites. One script would need to be written for each site probably, but it could benefit many libraries. On the basis of this one post I've added him to my RSS reader.