The first step is to create a custom link for yourself.
This link will trick your friends into believing it uses facebook's data to calculate the compatibility between two people. The name they select on this page will be emailed to you, thus revealing their secret crush!
Login with your facebook account and a custom page will be created for you. This page will look like a Facebook Compatibility Test but it will actually be programmed with hidden instructions to email you any information entered on it.
The next step is to send your custom page to all your friends and convince them to try out this amazing new compatibility test you've just found. The link can be sent via email, private message or it can even be posted on your wall. Posting it on your wall is a great way to trick multiple people at the same time.
Believing they've been sent a link to a compatibility test, your friends will be tricked into testing their compatibility with someone they secretly admire . This however will not happen, instead the names they enter on that page will be emailed to you. Congratulations! you've just found out who they secretly have a crush on.