Are you like me and fed up with people scraping your blog content? Now's the time to fight back. Please support my campaign to expose these cheats for what they really are. More info at http://www.aluxurytravelblog.com/2009/12/17/im-an-idiot-and-a-thief-for-publishing-this/
good luck with that. you are wasting your time. while your intent is well founded, you simply can not make a difference unless you have some way to enforce what you are doing. Sad but the internet is not fair.
If it really gets to you, you can just kill your RSS feeds. I've removed the feeds on a few WP powered sites (they were being scraped), and I haven't noticed any decline in traffic whatsoever.