A Calgary mother who started a group that's policing Facebook comments about dead B.C. teen Amanda Todd says her sleuthing got one man fired from his job.

The London, Ont. man posted an insulting comment about the 15-year-old girl last week, the day after she committed suicide.

Christine Claveau says she was so offended she contacted the London man's employer, Mr. Big and Tall, which confirms the man no longer works for the clothing retailer.