Had a nice streetpass experience yesterday in the train.
First, streetpassing some people in the train station.
Then, in the train, having a new green light and a Mario Kart notfication. Opening the notification, starting Mario Kart, and without understanding what I was doing at first, I (very) quickly ended up racing a 4 courses GP against someone else in the train.
It was quick and very easy (just 2 clicks, one for the notication and one for the starting MK7 button). Don't know who she was but I received some of her ghost data today. It's a nice and convenient way of playing, an unscheduled MK game. Nicely done Nintendo.
Quick thing on the eshop (litle offtopic), there still isn't an option for offering games to 3DS friends, and this sucks. Should have been part of the pre-Christmas update. Am I missing something?