150,000 iPad early adopters might not be the smartest consumers

If you were one of the estimated 150,000 people (like me) who ordered an iPad in the first three days after Apple began accepting orders for early April delivery, you're probably an early adopter -- made of part vanity, part curiosity, with a willing to pay a premium for the latest and greatest toys inventions.

I'm not sure it isn't wiser to be a secondary adopter, though -- the closets of early adopters are jammed with failures, and even those successes come at a steep cost. Remember standing in line for a $599 8GB iPhone? ATT now sells those for $99 with a two-year plan.

Smart Money recently deconstructed early adopters by studying their digital scat, pointing to seven devices in the past 30 years that helped define the class: