It's probably the scariest friend request you'll ever get: Your mom (or dad... or, God forbid, grandparent) has joined Facebook – and they want to connect. Sure, you love them – and you're happy they're embracing the digital age – but do you really want to keep them that informed about what you're up to?

Some work friends and I were recently discussing things that men can not criticize their girlfriends about. It was astounding how incorrect us guys were when trying to lay out our "rights" in terms of constructive criticism. The women in the office were appalled at what we thought we were allowed to talk about. If I could figure out what I am allowed to criticize and what I should stay away from, I'd avoid arguments and do a better job of hitting on girls.

I'm guilty of saying things to women that only their best girlfriends, gay male friends, and moms/sisters are allowed to say. I put together a list below:

The Beatles were famous for being a group made up of very distinct character types: There's the cute one, the quiet one ... you know the rest. Take our fab Beatles personality quiz and find out if you're most like John, Paul, George or Ringo. See it here

But many people do a lousy job of picking businesses they can realistically turn into a profitable operation.

"There's this very sad pattern about how people start businesses," says Scott Shane, an entrepreneurship professor at Case Western Reserve University in Cleveland, Ohio. "People are most likely to start businesses in industries where start-ups are most likely to fail."