FR has been named in the same articles are being the source to the rumor.
http://www.freerepublic.com/focus/f-news/2037786/posts
Other than reputation, which is very hard to quantitate, none (thus the legal recourse angle isn't really anything worthy of exploring, plus that isn't who we are.)
The concern will be in the long term if stuff like this is used as evidence to stifle internet free speech.