Mainly the tweaking suggestions for Vista, Win 7 and Firefox. Window scaling heuristics should never be disabled unless you want to use a setting that is incompatible with your internet connection or router. If you want the best connection do a TCP reset, enable heuristics and forget it. If you move around a lot you may want to disable heuristics until you come back to your home. The Firefox tweaks are outdated and one of them, nglayout.initialpaint.delay set to 0 actually will slow the page rendering so the default will probably work better. I think your site needs to be fixed since it is not nice to mess up others connections and fool them thinking they are improving their connection.