> FF should be more active in making all the sites work on their browser.
How? By matching any bugs or spec incompatibilities Chrome has that makes the site only work in Chrome? Or by begging the site authors to fix the HTML or CSS or JS? Because I don't see any other options.
The first defeats the purpose of having an independent browser (or web standards). The second won't work -- or at least, its success is determined entirely by market share, not directly by what Mozilla does.
I'm really not sure what you're asking for.