in reply to xkcd-style password generation
OK, you've gone and inspired me.
Randall Munroe is awesome! A Google search for the phrase "inspired by xkcd" returns over 50,000 hits (including mine).
There is no Extraterrestrial life
There aren't any suitably capable Extraterrestrials
Interstellar travel is too difficult
We're too uncool / not worth the trouble
What do you mean they haven't visited?
Results (462 votes). Check out past polls.