Happens with Tv and radio too. I chalk that up to coincidence.

I do remember them talking about putting recievers in our TV's/cable boxes and chips in our products so they could see what we were buying and direct advertising to specific customers.

I truly believe this is happening NOW. Digital TV and required "boxes" to have access to television. plus, clearing up the airwaves for more important and nefarious signals.

Ebay tracks, google tracks, facebook and twitter track. tou can see it on the choices of ads they display. I am fairly certain that if they can gain access to your microphone then they will.