Newest one on FB is the bunch of new groups claiming to get your old home page layout back. Catch is you "have to invite ALL your friends, then register with a mobile phone number".

The thing is all you're doing is spamming your friends for them, and the 'registering' signed you up for a series of texts or surveys to be sent to your phone with a charge of anywhere from $6 per text to a flat $19.99 per month.

Oh and the "gold member" thing is a similar scam. Avoid both types of groups.