The level of overall ignorance in a show's forum is inversely proportional to the maturity level of the program being discussed (i.e. More mature shows tend to have more mature/intelligent audiences and vice versa.)

Exceptions:

People who are just plain idiots regardless of what they watch on TV.

Intelligent people who just happen to like childish/immature shows.

I notice such drastic differences in intelligence between shows. For example, someone on the Zoey 101 forum refused to believe the rumors that Jamie Lynn Spears is pregnant because she is unmarried and, by his/her logic, should not be able to bear children. Seriously, either people are disregarding TV.com's minimum age requirement (age 13) or society is producing more naive preteens/teenagers.