Shoemoney recently posted a plugin he had one of his friends put together. Its basically a plugin that puts your sites url on your RSS Feed. Which is supposed to stop scrapers from stealing your content and not giving you any credit or link love. This way your URL is automatically in every feed post and if some other site scrapes your content you’re getting some link love back.
I decided to toss it on some of my more popular sites and with in the first day I was getting some free backlinks. Generally the more popular the site is, the more its getting scraped by other sites. This could be modded to work for any setup I’m sure, not just wordpress. If you have some PHP knowledge(doesnt take much) you could implement this for your sites RSS Feeds. What have you got to lose? Take a few minutes and toss it on your wordpress blog.
Plugin Link: RSS Footer