We have seen a few new members that have made incoherent replies to threads, and I have been banning them immediately. The last one MAY be legitimate, but I have sent that person a message like this- "Please respond to this message with reasons why we should accept you as a member, rather than think you are a spammer or robot."
I will send the same message to any new ones I see.
Depending on the response, or lack thereof, I will admit them or ban them.