lucy24 - 1:37 pm on Mar 10, 2013 (gmt 0)
Your credit card company watch your spending pattern and send you advertising about any products that match up.
Bit tricky, there, since groceries are one of the few things most people still pay for with cash. Don't quite see the supermarket staff poring over checks, matching them up with receipts and noting down the imprinted address.
WebmasterWorld forums are indexed before the page even has time to refresh, and were highly visible in search results before g+ ever existed. Would our advertisers pay more if the number of tweets, likes or followers went up? How simple-minded of them.