Fmylife.com has a nifty feature that when you copy the text from a post, it actually copies a LINK (html) so that when you paste it into your email/facebook/instant messenger/twitter/whatever it automatically will link to the post, giving them more traffic and more page views and more ad revenue, etc.
I looked into their javascript files but can't seem to find how they do it. How would one go about copying this behavior?