Also, it's OT but the NY Times had a really fascinating story about Target's data analytics group (aka, How Target Knows You're Pregnant Before Your Family Does):
http://www.nytimes.com/2012/02/19/ma...pagewanted=all
Because I have seen people get pissy about NY Times links around here, here is a Forbes story that covers the Times story and quotes from it:
http://www.forbes.com/sites/kashmirh...er-father-did/
eP