Love to see that Virgin UK/O2 have blacklisted "http://detectportal.firefox.com/canonical.html" (the URL Ffox uses to invoke a captive portal, such as the ones you have to clear in order to use public hotspots with Virgin as a provider). Also nice to see that they've copyrighted the error page.
@pluralistic Nice.
I customized the captive detect page and response on my install to a personal page, but sometimes my domain still gets blocked for whatever corporate BS reasons.
