It happens a lot in freerolls (i'm personally responsible for some of it), especially on sites like poker stars
and fulltilt. when the freerolls are only for 1-2 hundred, and theres 2700-12000 people in it, most that start just want to get lucky early, and see what happens. Because to gring it out for 5 hours to make the money, only to win 10 cents, is a pain.
Unless its a freeroll for a site like this, or railbirds, where you can actulaly get ranked and noticed for grinding it out in tourneys repeatedly.
But the big freerolls are a crapshoot, and reasonably so.