Is it an actual flaw in the system? I have added many users to my ignore list too but I ask myself would I really interested in wanting to know their IQs if I have already ignored them? If it were necessary for me to evaluate my own intelligence against those of other forum members I think I would be more inclined to check against those on my trust list 
We are now only allowing smart people to post. To prove your intelligence, you must answer the following question:
This cavalry officer commanded the Union cavalry at Gettysburg.
George Custer
Judson Kilpatrick
John Buford
Wesley Merritt
This system has a fatal flaw in that I can't see the IQ of the (incredibly numerous) users I have on Ignore, and am therefore unable to see how good a judge of intelligence I am. 
We are now only allowing smart people to post. To prove your intelligence, you must answer the following question:
This cavalry officer commanded the Union cavalry at Gettysburg.
George Custer
Judson Kilpatrick
John Buford
Wesley Merritt