Five Ways to Build Your Own Groupon
http://www.websitemagazine.com/content/blogs/posts/archive/2011/01/27/five-ways-to-build-your-own-groupon.aspx
http://www.websitemagazine.com/content/blogs/posts/archive/2011/01/27/five-ways-to-build-your-own-groupon.aspx