If you sell a popular "product" on Craigslist, you could soon be breaking the law.

If you search around Craigslist enough, you'll surely find some pot for sale.

Sure, the sales of pot are legal in Colorado, ONLY if you have a license to sell. That hasn't stopped others from cashing in on recreational pot's lucrativeness. That's about to change.

A bill that passed unanimously in the Colorado Senate would create a new misdemeanor of advertising pot if the seller doesn't have a license.

This new bill will help law enforcement agents crack down on black market marijuana sales.

There is one more required vote before it goes before the Colorado House.