The Wii is currently dropping down in the sales in the US. Its not real big, but still, it happens:

 http://www.vgchartz.com/hwcomps.php?cons1=Wii&reg1=America&cons2=PS3&reg2=------&cons3=X360&reg3=------&weekly=1

 There is nothing indicating that the demand is met in NA at the moment (is it?), so it seems Nintendo lowered the shipments.  If you look at the graph, that already happend this year (far bigger that in the moment) in April.  The sale numbers of the Wii got up right after the week paper mario was released:

http://vgchartz.com/aweekly.php?date=39187 

Is it posible the same thing is happening again, with MP3? Maybee this time the increased shipments comes with the game? Or is nintendo maybee saving this units for something else (Christmass). Or does the price cuts of the 360 and PS3 hurt the Wii?

 I personaly think Nintendo is preparing for increased shipments at the moment. But how high the shipment will go up. If I'm right, units sold this week will still decline (80-82k).  Next week decline further (75-80k?). The week MP3 arrives the units either be solid, or go up, but how much?

Well, these are pretty small numbers. Remember, Nintendo had diverted a lot of units to NA for a couple of bigger releases, so it was putting up higher-than-usual numbers (100K+) for some time. 86K is actually high-ish if you look at the Wii's history.

It would be cool if Nintendo was diverting units to NA right now for the Metroid Prime 3 launch. That'd be awesome -- but I wouldn't expect them to sell more than 115K the week of MP3. I guess if they're stockpiling, as a few people suggest, they could easily ship 300k, 400k or even 500k for the MP3 launch.

Of course, we won't see that and people will continue to insist that Nintendo is stockpiling.

They're probably just stockpileing for christmas.

And people will continue to ignore the mounting evidense....I already said that in the thread on this topic directly to you. But you didn't address it there either....

Anyways, looking at July, and if you read my month of July summary. You can see that July was a huge month for the Wii. Numbers are normalizing down to what they were before the July surge. I doubt this is an indication of demand being met, but its not out of the realm of possibility. Although I would suspect eventually when the rumors do start to fly that the Wii demand is coming down the people who were waiting for that will go out and keep it sold out a bit longer.

Once weekly numbers drop down below 180k we can start talking about demand lowering down. As it is, the lowest week the Wii has had to date was 166k for the week ending March 31st and out of the 37 weeks since launch it has only had 6 below 200k and all of those were within a 7 week period starting at the beginning of March and going up to mid April.

They might have been worried that it was becoming too easy to find a Wii or that stores might be becoming stocked with them which would cause the shortage "must have" phenomenon to die off.

Didn't someone on here say that once they started to appear on store shelves in Japan and could be found easily sales started to slow down there?

Just look at the DS people. it's not sold out everywhere like the wii is and it still sells around 120k a week in the americas alone. Even when they meet demand the wii could still be selling 120k a week in america and everywhere else.

I don't think stockpiling the system is such a good idea. Because of its competitive price, the Wii is more an impulse purchase kind of product, when people want a Wii they should be able to get a Wii, if they don’t the urge might ware off and they might reconsider it and go for a another system instead.

The Wii is anything but an impulse buy.
When GameStop employees have to deal with about 10 calls a day and another 10+ walk-ins every day looking for them, that is not a impulse thing to do. People are putting actual effort into looking for them.
And the return/sell back rate of the Wii is next to none which is another sign of a Non-impulse buy item.

I don't get how anyone can think that the Wii is a impulse buy.

As for what this topic is actually about, The drop is only due to Nintendo letting out a limited number of Wiis, Yes they are stockpiling. And they do release more Wii units out into the wild with every major new release. Expect to see a lot of Wiis come the MP3 release.

First supply constraint... now stockpiling... it's getting annoying.