Yeah, the "free IQ test" thing made me wonder too. I always thought that intelligent people would not be very likely to click on those ads.
This is a wild, completely speculative hunch for which I have no evidence.
I'm not suggesting smart people are unethical, but rather that ethicality and intelligence are fairly orthogonal, and that your proposed means seems to have more to do with the former than the latter.
As to the speculation, you are of course right. I'm just putting off studying. Speaking of which...
But neither is trying to convince anyone on the internet that you're smart in the first place.