Facebook ads and games are becoming legendary for their scammyness, and it should come as no surprise to anyone that ads for free gift cards on Facebook, such as for a $500 Olive Garden gift card or a $500 Whole Foods gift card where you have to enter your mobile phone number are completely bogus and will only result in unexpected charges on your phone bill.

Basic rule of thumb – if it sounds too good to be true, IT IS!

Update 4/5/10: Yikes, it looks like there is more than mobile phone numbers at stake here. Some of these gift card scams involve the installation of malware on the computers of people visiting the Facebook fan pages involved or other sites. Be careful!