While there is no real definition for what a actual hippie was, at least there wasn't in the day.  People would get together I can remember and discuss who was an actual hippie and who wasn't.  Now the older generation knew for sure that everone who wore their hair long was a for sure hippie, however that was not always the case.  Where did they go, well they went from not trusting anybody over thirty to not trusting anybody below thirty,(seems to be a common age there),some became yuppies and all remain free spirts at heart.  The hippies did not go anywhere they just became the establishment that they used to fight.  It all comes full circle.  Before hippies it was beatnik's each genaration has those that do not fit in to the common, but will always become as they age to perfection.