Ok, I've never shared how to unlock badges on Foursquare. Since people are always stalking me to ask about how because obviously I'm a Foursquare freak, let me say this first before I get on this tutorial for a badge that has been elusive for some time.
If you don't want to know how, don't read on. But it's doubtful you can unlock this on your own otherwise, since this badge was introduced during SXSW 2010 (that's the South by Southwest music festival). And most of you not reading this might never get it.
See it was called the Groupie badge because apparently at the event, you had to collect the business cards from people that work at foursquare. Each one has a different symbol on the back and there are 6 different symbols. Once you get all 6 you go to a special site and put them in and then you get the badge.
Now, you have to click the cards with the badges on it - IN SEQUENCE. The sequence should be in this order that you have to click.
Simple isn't it? Please leave a thanks here in the Comments if you got the badge... and do let me know if you want to know how to unlock other badges. I'll try and help out what I can.