If you have not patent your business models, there is nothing you can do. For every Groupon, there is Living Social, and others... might as well keep innovating

If you have not patent your business models, there is nothing you can do. For every Groupon, there is Living Social, and others... might as well keep innovating, and stay ahead of competition. I am not sure about your website because I don't see the link, but if it's something you can patent, then you should do it, then you can sue. :)