http://videogames.yahoo.com/feature/wii-s-future-in-motion/1270287To date, Nintendo has sold nearly 35 million Wiis, including 12.6 million in the U.S., Nintendo's biggest market. That's lower than Sony's PlayStation 2, which has sold 43 million units since 2000. But it's still pretty high for a console that, at launch, was technologically a generation behind its chief competitors, Sony's PlayStation 3, with 13 million units in users' living rooms, and Microsoft's Xbox 360, with 23 million units. This year, the Wii is expected to sell more than the best-selling PS2 sold in its best year, 2003.
why?

I like the wii dont get my wrong but.... playstations and the 360 are soooo much better.

I love, love, love my 360.. I know the wii's cater to casual gamers but still, those numbers are impressive.. If anything maybe it will make Sony and Microsoft stop pricing their consoles so high.