Originally Posted by Mhtml
However I wouldnt like google being able to classify me into a category.
Why do you care about that?
I've done some datamining and clustering project in the past, and they can deliver quitre usefull info where all partys benefit from.
If it makes my life easier/cheaper, then the may classifie me however they like. It's not like they can control some switch in my head or so. Do the experiment : write down for a whole week/month/year what sort of products/brands you get/see advertisement from, and then compaire it to the products/brands that you buy. You'd be surprised how little influence there is from such 'targetted advertisement', even if it is based on some clustering or categorisation algoritme.
Being able to efficiently search your mails = a gift from heaven !