I've long thought it would be interesting to make a video of how people with tons of feeds skim them and pull out interesting information.

This is my "high volume" folder which holds posts from sites which post 10+ more items a day and which I could "mark all as read" and not miss much.

When I skim through these posts, this is how I do it. Each post probably gets less than a second to catch my attention. You can definitely see which posts get a bit more time than others. The one with the couple having sex was pretty interesting ;)