To whom? Google collects a lot of data. Combined with the size of the aggregated net, it is more intrusive than anything else out there. However, they only sh

To whom? Google collects a lot of data. Combined with the size of the aggregated net, it is more intrusive than anything else out there. However, they only share a subset of that with the site owner, who is no more than their tool. Use Snowplow or Piwik, or a bajillion paid competitors, and stop giving up your users' privacy.