Honestly, I've actually found the AdSense staff to be quite responsive and even more so over the last year. I know, that's not very helpful to read. But, I do try to make sure that my inquiries are something that I would reply to if I received the same thing in my inbox. I can only imagine how much junk they receive on a daily basis. I am not suggesting that any of you are sending worthless inquiries their way. Google seems to use automated filters for search results, so, why wouldn't they use some filters for contacting them? I could be wrong...although, I've enjoyed conversing (via email) with a few of their employees on a number of occasions that resulted in problems being solved.