You young'uns...back in MY day, there were rerun abuses that make the ones in the poll look practically innocent. Back in 1997 and the "dark period" (as we called life without Goodson-Todman shows, if only we knew then what we knew now!), GSN used to show the same handful of Junior Pyramid episodes on weekends. It WAS the weekend, but still, they didn't have much to use.
I think they went through Hot Potato's run a few times in the early 2000s. Ditto the original 3's a Crowd, and I'd imagine that there were more when they relied on many short-lived shows even on weekdays during the DP (Feud '94, Go, Treasure Hunt '80 to name some...)
And don't get me started on their Newlywed Game fetish in the late '90s!