tedster - 3:14 am on May 5, 2013 (gmt 0)
why would switching to a non EMD cure the issue for some people?
Because Google's final EMD algorithm was a bit heavy-handed on the edge cases? They tried to get it balanced through, what, something like 3 updates? So some people's sites have something good going that isn't just EMD keyword matching, but possibly this last EMD update trivialized that.