ClickTale Blog » ClickTale Scrolling Research Report V2.0 - Part 1: Visibility and Scroll Reach blog.clicktale.com · Archived on 11 Oct 2007 · Originally posted on Pinboard

Visitors appear to be using the location of the scroll bar but not the size of the tracker when scrolling, since the scroll bar location is a relative indicator and the scroll tracker size is an indicator of page height.