Energy. Biofuels will continue to remain hot until people realize what a terrible idea they are. Then I'd bet on photovoltaics and advanced battery technologies. Oh, you meant in software? ;-) I think that VOIP/videoconferencing/telecommuting software will get even huger than it is now, along with better social software to manage these interactions. There're three main drivers for this: 1.) The cost of bandwidth cont…
Biofuels have their place. They are not the magical pill that will wean America of middle eastern oil but they surely have their respectable percentage over time.