Yup this is the killer app. There's going to be an api to your wallet that other apps can use to access funds for per-minute video/audio, or per b/kb/mb/gb, or power-ups/lives, etc.

Tipping with crypto is a good idea and it definitely would be popular in near future.

"It might make sense just to get some in case it catches on. If enough people think the same way, that becomes a self fulfiling prophecy. Once it gets bootstrapped, there are so many applications if you could effortlessly pay a few cents to a website as easily as dropping coins in a vending machine"