I've been using Web Optimizer / Web Site Maestro for a couple months now and all I can say is that it has been invaluable to me for my websites and those of my organization. We have one very large site (500+ pages) that needs to be accessible to our farmer consultants and other people on dialup connections across the USA, and our site is loaded with information so the load time of pages makes a really big difference to our users. With Web Site Maestro / Web Optimizer I achieve compression of up to 40% on our pages and our users are genuinely grateful for it. It's a great, simple to use product which does its job and does it well. After using it for a while I was convinced and I registered my copy. Bonus: the author is very helpful for all support inquiries.