"If your parents were divorced, you're at least 40 percent more likely to get divorced than if they weren't. If your parents married others after divorcing, you're 91 percent more likely to get divorced."
http://www.thedailybeast.com/blogs-and-stories/2010-05-19/15-ways-to-predict-divorce/?cid=hp:beastoriginalsR2 ::Edit::
Also wow:
"If you're in a male same-sex marriage, it's 50 percent more likely to end in divorce than a heterosexual marriage. If you're in a female same-sex marriage, this figure soars to 167 percent."
I would have expected those numbers to be reversed (and not quite as high).