They can try to, but not the same as actually browsing a site with the REAL DEAL. Lot of nuances you're not going to get from a screen shot only method. There is not touch and feel from that and you don't see the glitches either.
It's IS a real runthrough with the browser on a specified OS; granted it won't show issues scrolling down, but it'll show the entire thread from top to bottm; they're quite nice...
