A great addon that saves a ton of time if you browse Reddit frequently or use the weekly/monthly feed.

It would be nice to have a 5-10 second delay before hiding posts that went off-screen.
Or, for example, to show the last 5 hidden posts (before refreshing the page).

The problem is that when you scroll quickly through the feed, the off-screen posts are already hidden and you can't scroll back up if there was something interesting there.

P.S. I suspect that some posts may be hidden by mistake because the browser remembers the last scroll position and sometimes displays the feed not from the start. I'm still testing this.