I second the "let it go" idea, unless you know for a fact that people are getting confused (AND, it's a large enough N that your most important next task is to

I second the "let it go" idea, unless you know for a fact that people are getting confused (AND, it's a large enough N that your most important next task is to recapture those people). Most of the time, it's a wiser use of your time to go and get new customers as opposed to worrying about folks who mistype the domain. Also, most (consumers) find websites through google. Focus your efforts on SEO there -- I bet your ROI is MUCH higher in optimizing google cmp to worrying about bottom feeders like these squatters.