It's difficult to believe this billboard is real, not a doctored photo for The Onion. Sad really. But it is, and it can be found in LA at the intersection of Wilshire and San Vicente, near the Jewish Federation building (not that there is any connection). LAObserved points out the ad for the website "for women seeking romantic affairs — and the men who want to fulfill them."
Trademarked tagline: "When monogamy becomes monotony."