I think that 1% is used way to much. Every time someone feels like he is in the Majority he uses it as an argument to tell the peoples that everyone who disagress is just in the 1% corner.
I heard that alot like "Lol only 1% are Raiding!" or "Lol only 1% making PvP" "only 1% are Roleplayers!"
I dont know if that comes from somehwhere else too but first i saw this in an Wow Forum where Blizzard said something about "Only 1% of our Players did finish Naxxramas" (In Classic) That cause alot peoples to think (Dont ask me why) that only 1% of the players are actually Raiding at all.
Is that 1% of anything really confirmed somewhere?