There's a UAV pilot in my area that has decided to go "commercial." He recently sent my company a letter advertising his services...We are located in the US, so we all know that it is illegal per the FAA to operate our UAVs commercially unless you have a section 333 exemption from the FAA. Looking at his public Facebook and Flytrex page he is constantly breaking the recommendations by the FAA for altitude (1000' to 3500' AGL). His signature photograph is above the city of Milwaukee (appears to be 1000+ AGL) near, if not in, a potential flight path for General Mitchell Airport. I've reached out to him and nicely/ professionally informed him of the FAA's best practices for UAVs. Is there anything else that I should pursue or have I done enough? Thanks.