This dude set up a "this is for free" sign and then some other dudes just swooped in saying "we'll take all of this" and then just replaced the sign with "$500k".

The problem with this is that it disincentivizes the sharing mentality. Nobody wants to be the guy who gets taken advantage of, yet everyone benefits from free sharing of knowledge. And then once in a while you have dudes who swoop in and make everyone look stupid and make them re-think whether they should ever share their findings with others again.

Obvious could make this right if they wanted to. Yet they are standing their ground on Twitter, it seems.