it's back to school time, so in some ways it's reflecting the userbase of the Wii. if parents were gonna pick up a wii for themselves, seems like the start of a school year is a bad time to do so if they have kids. and obviously if the kid wants a wii, the parents won't be getting it this time of the year. this trend is likely much more pronounced for the wii than the ps3.
obviously, as a nintendo shareholder, i'd much rather the wii experience no dropoff in sales, but that just wouldn't make sense.
is the user-base deteriorating? no, it's more like the wii is just reaching some saturation level now, after 10 months. we're gonna see just what this saturation level is, although in about 2 weeks i expect sales to start going up again as kids again start getting what they want.
the Wii is an epidemic.