Quote Originally Posted by econcepts View Post
Any sites / browsers that block JavaScript will not show up in GA. You might get an idea of this (very general) by looking at the number of visitors that come to your site who have JavaScript enabled. Those that don't more than likely are not counted in your GA totals.
AHH I was JUST going to ask about that! I have no-sript installed for Firefox and I always block everything. There has been many times I haven't allowed google analytics on sites....