A Wii finder tracks store inventory from all the major stores and keeps you updated with it. You can find exactly where you can get the Wii Fit in stock. Moreover recently when Circuit Coty sold out on there first week pf the year for just $9.99 it was almost everywhere on Wii finder. Wii are hard to find so when you see one in stock in any store through a Wii finder it is good to grab it rather wait for more and lose it. It is not bad to check eBay auction which happens frequently. You might get your Wii at a lesser price.
However it was difficult to find Wii during Christmas, be it any Wii finder or tracker. The situation has always been the same every Christmas for the last two years. However this year Reggie Fils-Aime promised that we will have Wii in sufficient stock but checking any Wii Finder we saw most major stores running out of stock. Reggie kept its promise for sometime by providing sufficient stock for shopping but that too did not last for long.
Wii is being used by almost all sectors for different purpose. Be it at home so that families join together, or the hospitals or hotels. Wii is everywhere in use, maybe in different ways but people still want it. The more Wii is in use the more is the demand but looks like Wii finders are less to handle.