Definitely not dangerous (maybe in the USA), you're just waiting for your light to switch. Better than standing and tapping on your phone, it seems fun, it involves another person across the street that you get to meet, high fives and a lot of smiles. This is how the life should be. Wait.. in America a strange wouldn't give you a high five, that would be just weird, why would someone do that? What if they have cooties?

:D