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MThiessen - 8:01 pm on Mar 29, 2007 (gmt 0)
I think they figure if we ban you and "you" say nothing, well, your guilty since you are not fighting the ban. That's why they don't manually review a site before banning. (also saves manpower).
Unfortunately for you, Google probably doesn't manually review most sites prior to banning them, so it has to recognise patterns that spammers use. It identified a pattern, had no trust or faith that you weren't a spammer, and banned you.