First, don?t claim that you are innocent - they know why you were suspended, and you will have a better shot if you confess your sins and promise to be a law abiding AdSense publisher. If they know you made a habit of clicking an ad or two every single morning, thinking they would never notice the odd click here and there, trying to deny it will get you nowhere.

And if you happen to get suspended and you really are innocent? Offer to provide any raw logs to aid in their investigation, although it may take a couple of tries once you are suspended to get them to respond about it?.