They had an entire product for encouraging people to share knowledge back when they had less money. It wasn't an instant hit, so they gave up on it, and shut it

They had an entire product for encouraging people to share knowledge back when they had less money. It wasn't an instant hit, so they gave up on it, and shut it down once everyone forgot about it. https://en.wikipedia.org/wiki/Knol https://en.wikipedia.org/wiki/Knol