Make scrapers work for your blog

I just added Joost de Valk's RSS Footer plugin to my blog after reading his post Make the scrapers work for you!

I like scrapers about as much as I like spammers so anything I can do to thwart their efforts is a win in my book! :)

Update: Actually, after some thought, I'm wondering if this plugin is such a good idea after all. At least some scraped sites no doubt will be hosted on sites designated by the various search engines as "bad neighborhoods". Is having incoming links from these areas to your sites really a good thing?

How do you guys deal with scrapers?

Update: I've disabled the RSS Footer plugin for now. Instead, I'm displaying a Creative Commons license on blog posts and I've added the license to the feed also. More here.