Just wandering if this is good for street magic. Anyone who have tried it, in their routines or anything, please share your experiences and views about it.

Outdoors is probably soon the only place you can use it, with all the restrictions regarding safety. And it probably looks really nice at nighttime.

Anyway, flashpaper is not a trickin itself, it's like asking if a bottle is good for street magic.

Some advice could be:
Don't use it when other people stand very close.
Some flash paper don't burn as quick so if you throw it and it lands on something that can catch fire...

It's soooooo pretty at night time, but it hurts your eyes if it's too dark out.