While I do understand what you're trying to do, I think this might do more harm than good for the advertisers who are paying for these ads. It will probably make it hard for them to track how well their different SEM campaigns are converting and ruin all of the analytics collected by both adwords and programs like google analytics. If the 'google-infested' link (as one person put it) somehow has the campaign tracking query parameters in it (I haven't really looked into it yet) It might be a good idea to keep it as part of the sanitized url so as not to mess with any of the hard work that the advertisers put into their campaigns.