If they are going after your features, you should go after their customers. You're the one leading the group right now and considering they are copy cats, you'l

If they are going after your features, you should go after their customers. You're the one leading the group right now and considering they are copy cats, you'll always be ahead of them in the game. Try to contact their customers through twitter, their Facebook fan page, advertising and whatever you can think of. I'll leave it up to your creativity on how you can persuade them to your product but if you can do that you can bust the other company.