I was reading the comScore report linked to by Slashdot regarding who paid for Radiohead's new album. The most interesting aspect of the report for me had nothing to do with the statistics or the interpretation of the data, but the origin of the data:
The results of the study are based on data obtained from comScore's worldwide database of 2 million people who have provided comScore with explicit permission to monitor their online behavior.
2 million people gave explicit permission to a company to spy on their on-line behavior in such an invasive way? I find it hard to believe.