It seems as if a lot people don't know how to use the Personal Message option properly. When replying to a PM, you CANNOT just hit reply to sender in the mail program. That just replies to the system administrator, which is me. Therefore, I get the PM, not the intended person. To answer a PM, you must use the enclosed link that comes with a PM, which directs the message to the correct person.
Another option, is just send them a regular email.
Thanks!