What is up with this free Itunes gift card money offered on facebook?

Has anyone seen this on facebook? There is a group you join and if you follow simple steps, apparently you get the specific amount of Itunes money added into your account. The catch is that you have to fill out a bunch of surveys and it seems like it goes on forever. I got to the filling out the surveys, but it just kept going on. If you have heard of this, has it worked for you? Has it worked for someone you know? If so, what did they do differently to make it work?