If it sounds too good to be true, it usually is...

As is the case with a "3 free pizzas" coupon appearing to be from Little Caesars circulating on the Internet.

Click On Detroit says the pizza chain has posted a warning to Facebook, saying the coupon was not generated by the company and may be a virus that's harmful to your computer.

The Detroit-based pizza chain advises people to not click through to the coupon.

Have you seen the fake coupon online?