Regardless of whether they would have legal ground to stand on, it doesn't sound like the OP has the time or money to get into litigation with FB. If they were

Regardless of whether they would have legal ground to stand on, it doesn't sound like the OP has the time or money to get into litigation with FB. If they were to send a cease and desist letter, not many people would dig their heels in and take things to the courts out of their own pocket.