That would turn out just like internet polls showing Ron Paul winning in a landslide and security blog polls showing most people memorize a unique 14 character

That would turn out just like internet polls showing Ron Paul winning in a landslide and security blog polls showing most people memorize a unique 14 character alpha-numeric password for every site they visit. This is the right way to anonymize the data -- publish only aggregate data, rather than anything which can be analyzed individually. If you don't expect everything you do to be anlayzed, you need to stay off the internet. The answer to privacy issues is user education. Asking companies to behave nicely will lead to users being extremely vulnerable to bad actors.