Microsoft must have been at least considering blocking used game sales or they would have quashed this rumor a long time ago. Its just damaging their brand. We wont know for sure for years but I think all the backlash is what made them back off it. So please continue complaining about it on the net. Companies do pay attention to it.
And for the posters who said that no one listens to reviews and it doesnt matter what the hardcore think I think that is incorrect. Most people really dont know what the specs are or anything at all but they do get the 'buzz'. It doesn't matter why we all hate the new xbox it only matters that enough people do so that consumers develop a negative feeling towards it.