We already knew old people don't use condoms. But a new study shows that they're also big fans of their "friends with benefits." Figures. Casual sex is the perfect distraction from your fast-approaching death.

Sexy grades or Sexy sex? Teens can have both! Provided they're in a serious relationship. A new study shows that teens in committed relationships do no better or worse than those who don't have sex. "Hooking-up" teens do worse.

"Friends with benefits," more like, "friends with herpes." According to one not-at-all-fearmongering researcher, having sex with your friends can speed up the spread of STDs. We recommend the tried-and-true "blogger method" of STD prevention, "never have sex, ever." [CNN]

You'd think this iPhone app would be a juggernaut from booty call heaven. You'd be wrong. One man's cautionary tale from the trenches of tech-savvy casual sex.