A lot of people whose websites get banned from Google eventually take the necessary measures to fix the problems on their site and then request reinclusion. Some, however, do not. They just submit that reinclusion request and assume everything is fixed. Matt Cutts isn't stupid, and you shouldn't think that's a way of getting around being deindexed on Google. In a Twitter message, Matt says that you shouldn't lie in your reconsideration requests. He says it makes him angry. Heck, I'd say that if people lie too many times, they shouldn't be reindexed at all ;)
(Thanks Harith!) :)
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