LittleBigPlanet Will Sale PS3's Says Sony

"Speaking to GamesIndustry.biz at Comic Con, LittleBigPlanet's associate producer, Eric Fong, made it clear that Sony are expecting the game to shift consoles when it finally releases this October. When it does so, it will have been over a year and a half since we first heard about it at GDC 2007 and every time we've seen it since it has improved impressively." - PS3Fanboy

I think that LittleBigPlanet will help sale PS3's very well. The game looks great and it's something everyone wants to play. I expect to see PS3 sales go up in late October when LittleBigPlanet is going to be released.

Source