[nottorp]

> Our marketing guy looked at our analytics and saw that there was a massive drop in checkouts from users whose displays were set to 1024x768. He changed his resolution and, sure enough, the 'Checkout' button was something like four pixels below the bottom of the screen, if you were using Internet Explorer or Chrome and you had your browser maximized.

Hint: buy the cheapest crappiest laptop you can find. Test your site on it.

[foverzar]

Why do you give those retroactive hints as if it is something obvious?

You are clearly confusing the issue here.

No one cares for your smartass solution for the problem - it's obvious enough once you are aware of the problem itself. The issue is tracking the problem in the first place.

Hints like "oh you should have just been totally aware of it in the first place" are plain naive.