I have (cough) multiple AdSense accounts. Two earn decent the third one was placed on a site with a very localised audience. Localised = clicks from same locality = invalid = ban. I was very polite and tried all but they confiscated my $95 and banned me. No worries since I have others and I'm able to run them on other sites. You can apply after sometime with an address change and a new website, without mentioning that you ever were associated previously or banned. Good luck. And don't try clicks, they are too dumb to figure out whether they came from somewhere else.