I see a lot of comments on satire links that clearly demonstrate that large numbers of people can’t always spot satire. That possibly says more about the current cultural and political climate than it does about people’s gullibility though.
Facebook has over two billion users. "Users expect" a wide variety of different things, and I suspect if you polled them there'd be plenty who expect Facebook to do some curation, particularly in the "trending topics" sort of area.
