I recently had a similar experience to John H. Farr. I followed a back-link from my referrer log, and found that someone was using my RSS feed to re-display my whole front-page on their website. I can't remember the name of the site any more—I was going to write about it at the time but I got distracted.

Anyway, I think that republishing my blog on another site is somewhat less than polite. Hence, I've stuck a copyright notice in my RSS feed explaining what I consider to be permissable uses of the file:

Copyright 2002 Charles Miller. This content is made available for personal use and limited syndication. It may be viewed, stored and cached without limit. It may only be republished in an abbreviated form: as headlines, with optional truncated summaries of the contained items. Permission is NOT given to republish this page in full, even if all credit is given to the original author.