Mr. Cause meet Mr. Effect. Last week, the governor of Colorado signed a new law levying sales taxes on online retailers.

Amazon has officially balked. Effective today this week it pulled the plug on all its Colorado-based affiliates or associates. This isn't the first time it's happened. Amazon made the same decision in the wake of similar legislation in North Carolina. It's currently battling the State of New York and only continuing its affilliate program there while the case is under appeal.

As many as 15 other states are considering similar new taxes.

Amazon says it doesn't want the "compliance burden".