Adds dns prefetching meta tags to your site.
Go to Settings » DNS Prefetch and enter any domains you want to be prefetched by Firefox browsers, in addition to the ones already linked on your home page. Make sure the "enabled" checkbox is checked.
For example, you might have http://www.example.com linked on one of your subpages. By adding "//www.example.com" you instruct browsers to resolve the DNS for that domain, decreasing the latency should someone with a Firefox browser visit that page.
Are you caching your pages?
Add this to your functions.php: