One thing to be aware of with visible-to-connection is that even users who haven't liked your page can still view the content by looking at the source. They use css of visibilty:hidden as opposed to display:none
7:15 pm on Mar 9, 2011 (gmt 0)
I signed up for one of these and I received an email with a $5 gift certificate. I too would like to know how this is done.
10:47 pm on Mar 9, 2011 (gmt 0)
The best way to do this now is to use an iFrame app. You can then more easily see if someone is or isn't a fan of your page