Awesome tool to find competitors' most active Facebook users

I was looking for a way to find a way to improve my ROI from facebook ads as most of the times I was not getting meaningful clicks. Then I was recommended http://textfreeapp.org/home.php and their tool called Targets for FB. I submitted 3 of my competitors' facebook pages, got a list of about 950 facebook users that I could target my ads at. I went with a different strategy instead of simply displaying ads and saw some great response.

Note: They also give you fb email addresses of these users that can be used to send these users a message. The friend count does not work for 100% of the time, but it does work for many.