How to defeat Spam on The Verge comment system

We are not over run with spam on the The Verge comment systems, but it is annoying as hell.

All of them that i've seen are for bullshit "money at home" crap.

Could The Verge set a filter that would require moderator approval for any comment that has a dollar sign in it? I'd like to think there are enough mods and editors to make this a simple process.

Just and idea that i'm throwing out there.