Mr. Nemo posted:

Haha, just today I discovered a National Geographic show on Netflix that showed just this. I don't know the name in english but it shows exactly what the OP asked for, scams in different cities. Rio de Janeiro, Istanbul, Prague, Rome, etc. Watched two episodes (Ist. and Vegas) and it was fun. A bit too melodramatic. Basically, don't pay up front for mysterious services, and if anyone seems to friendly it's probably a scam. Like, in Istanbul there were picking people up right from Taksim square and taking them to random bars. I was there last year and I would've never done something like that. You have to be quite dense to fall for it, especially when a random local girl sits on your table and asks you for a drink.