rj
Veteran
Yea, I agree with this and what windhero said. Most of them aren't good.
I don't think I've done a Mensa IQ test, but I've done an official IQ test (could've been Mensa; it was a while ago so I can't remember) and I got 139. It is lower than the online tests (as expected), but not by much.
I did a Mensa test and aced it. I didn't bother to get my IQ, but I did well enough to get into Mensa.