Sometimes things happen online that are simply too close to who you are not to believe that your data is being collected, collated and used for marketing (or observation) purposes. Â
For my recent  trip to Dubai, I spent quite a bit of time researching things via google and even spent some time on the local google site for Saudi Arabia (possible client there).  My ticket was purchased only a few days prior to my departure and when I arrived at the airport I was pre-flagged for security with the triple-S.  The guy at the Emirates check-in counter said it was a DHS thing which means either they simply chose me randomly (and not either of my other colleagues) or they are checking with the big G.
About 10 minutes ago, I clicked a webclip link from within GMail through to the IHT and see an ad for Emirates Air and the Airbus A380 – the very plane and airline I flew home. Â What an interesting coincidence… Â I’m not feeling too paranoid or anything, but that’s seems more than just random selection to me.