If we've said it once, we've said it a hundred times.
Don't believe everything you read on Facebook, and think carefully before sharing it with your friends.
Take this Facebook post, for instance, which calls on people to boycott McDonald's.
As an insurance measure due in part to a recent string of robberies, African-American customers are now required to pay an additional fee of $1.50 per transaction.
Thanks for your cooperation,
The phone number at the bottom of that "McDonald's" notice?
A quick internet search reveals that it's actually the customer satisfaction number for KFC.
Regardless, almost 40,000 people have already shared the picture across Facebook. If only common sense were more common, maybe chain letters and hoaxes like this wouldn't spread so far and wide.Follow @gcluley