Well also a large problem is that Sega made more of a niche product which appealed to a certain crowd. These people go to SegaXtreme. Nintendo made more of a broad based product which appealed to a larger and more broad based crowd. Some of the Sega folks liked Nintendo games, but not all do, I recommend spamming other N related sites (gamecube.ign, etc) if you want to attract a larger userbase.