Dieting Dating Instrument like guitar or piano Self improvement ( procrastination etc etc ) and maybe Nano technology can be next hot niche...
sex i think.. in my country (Malaysia), the best niche during 2008 is "how to make your partner / wife squirting" "P oyeeh! you should believe it!
Errmm..maybe.. but since Obama has been won, i don't is gonna be best niche anymore anyway, congratulation Obama!