Counts of X-UA-Compatible HTTP header values, from 425K pages as in http://philip.html5.org/data/dotbot-20090424.txt

(See also http://philip.html5.org/data/ua-compatible-contents.txt)

      1 Dear M$, you are the only ones who care about this header, so please go f... yourselves :)
      1 IE=4
  11669 IE=7
      4 IE=7;FF=2
      3 IE=7; FF=3;
      2 IE=8
      2 IE=8;FF=3;OtherUA=4: X-UA-Compatible: IE=8;FF=3;OtherUA=4
     22 IE=edge
      4 IE=Edge
     46 IE=edge env=best-standards-support
      2 IE=Emulate7
      1 .IE=EmulateIE7.
   1167 IE=EmulateIE7
      4 IE-EmulateIE7
      2 IE-Emulate-IE7
      4 IE=EMulateIE7
      1 IE=EmulateIE8