I have been walking around in Paris all weekend and I thought I would share my experiences with Streetpass. I left from Holland to Paris and arrived there at about 11:00. Untill that point I had encountered 0 people while being on 2 stations and in a train. After that i have pretty much been walking around all day, visiting the bigger subway stations, tourist attractions etc. At 23:00 I was at my hotel and I had seen 1 person. This is the end of saturday. Sunday was about the same with the day starting at 9:30 and ending at 7:30 with me entering the train and arriving at home minutes ago. and after checking my 3DS once more I have still only found 1 person. So to conclude: not a whole lot of people carry around their unit in sleep mode this close after the release.