I know that most folks around here (and, I believe, the Rick Steves staff) have long assessed that the Paris Visite pass (the one that includes transport) is not a good deal for travelers (as opposed to the Paris Museum Pass, which can be a huge time saver and a decent money saver as well).
Well, more visitors to Paris are likely to become susceptible to it now, as the RATP has started including an ad for the Paris Visite Pass in its recorded messages that it plays while you're riding the Métro!
Considering that many tourists don't do research of any kind before coming (and thus don't take the time to find out that the Paris Visite Pass isn't actually a very good deal), I'm wondering how many will now be lured to purchase it after hearing all about this wonderful money-saving measure on one of their first metro rides upon their arrival in the city.
I don't know if the recording is being played on all train lines, but it's certainly a feature on the line 1.