I suspect now that FF has so much market share, those same webmasters have to do the same tweaking and complaining to get the page to display right with Gecko-based browsers. That's terribly inefficient. If browsers were actually standards-compliant, all it would take was running the html and css through w3 validators, then admiring it in any browser and knowing it will look the same regardless of the browser engine. That's the beauty of standards. Efficiency.