You probably didn't think John Edwards had a love child either when they reported that in 2007 right but wasn't picked up by the MSM until well into 2008? The National Enquirer has a very good track record of not being sued and/or winning if they are. There is a reason for that...They usually have at least two sources for these kind of bombshell stories in any event. Lets see if Todd and Sarah sues them for libel or not. My bet is no.
They also ran a story about Tiger Woods having an affair two months before his car crash. I would say they are definitely sleazy but considering where and from whom they get their information it usually turns out to be pretty accurate sleaze!