I tried one and got 143, which is apparently just inside the genius category. So yeah, not going to bother doing any more!
But seriously, IQ tests are almost completely worthless. If people are scoring, say, below 90 or above 170 regularly on different tests (which in itself is doubtful, considering they're not that consistent) then its fair to say they're fairly unintelligent or highly intelligent.
The gap in the middle could mean anything though.