Virgin America has sent a threatening letter to Adrants because of an ad (made by someone else) that they posted. Although Adrants has pulled the ad, the VX lawsuit is still a real threat. The ad shows the US Airways plane floating in the Hudson and has a small "fly <VX logo>" at the bottom.

You can view the ad here (for the time being at least). I'm sure it is also available in many other places:
http://gawker.com/5141376/virgin-sue...ssive-exposure

IMO - A simple cease and desist order would have been fine if they found it offensive. I would have expected US Airways to be ones offended by the ad. Maybe VX are being defensive (don't want to get sued by US themselves).