Via EDMW and various such Facebook groups within the social networking site itself.
Just follow the simple instructions below and you are on your way to trolling your friends:
1) Drag and drop the Facebook® Gold™ logo onto your desktop. Upload it as your new profile picture – and you’re away!
2) Copy and paste the following into your status: Official BETA tester of Facebook® Gold™ account
3) Copy and paste the following comments on your friend’s walls for Guaranteed™ Gold® Effect™: [Comment only available for Facebook® Gold™ account holders]
You are now an official Gold Account Member!
Welcome to the Party.
Here’s a screen grab example of how the trolling works. Have fun: