I hav seen Chris Korn doing this stuff, he takes any object, say a cigarette and makes it float in da air!!! and i can tell u dat no strings r used bcos it goes all around hands round n round, then between his fingers n finally comes to his mouth! Man, can anybody tel me HOW DA HELL DOES HE DO IT!!! Dats a real cool trick!

invisible thread dude. yes there is a string, it al in how you use it.
look on youtube. you can find all kinds of videos where people are 'floating' all kinds of things.