pull down to refresh

There's also the bystander effect acting in the case of a broadcast. "I don't need to pay because someone else will." ... This effect may grow as SN does and it just isn't that significant yet.
It seems like if you were hell-bent on one of these cases, you'd do different things.
Off the top of my recently caffeinated head ...
download info about events
I think this looks more like a video game.
interesting conversations happen about those events
And this looks more like an online community.