No Infinite Scroll

This extension is almost exactly what I want... I'm not sure how, but it detects auto scrolling and warns you. My biggest issue is that I need to add sites to the "do not pester me" list because I am using these sites as part of my work, but the "you're scrolling" thingy pops up and I can't find the settings page to whitelist a site. I've found it before, but I can't find it again.