Hi drekaz21
Ok I understand what you mean now. I have been trying out the Page Speed utility - every time I try my score goes up!
The preview laptop view looks a bit small to be real useful other than as you say, indicating whether it page is broken or not.
I think your post will be very useful given the potential issues with W3TotalCache. I myself have nearly finished a post on my blog which a few images so wish me luck The related article you mention is good btw.