We, personally, as editors, don't collect anything except quotes. Google Blogger, however, collects non-personal stuff from cookies to give us analytics about our blog visitors, which is displayed as a bunch of graphs and charts that we can't figure out. Also, our advertisers, if any, use cookies to prey upon you. We present ads through Google Adsense, which is fairly generic and harmless. We earn about ten cents a year by doing this.