So, any explanation behind the popularity of some of these posts? (the james watson one is obvious though)

"what's malicious about that? it's a preference. it hurts a lot of feelings, but is doesn't imply ought. the issue isn't if it hurts feelings or not, the issue is whether it is true." 
 
It's malicious because it emphasizes something that disadvantages the vast, overwhelming majority of humanity. IE, the idea of a light skin preference being innate.

Doesn't Frost push off the idea of there being some innate preference for light skin? IE, the idea that dark skinned individuals are at a huge disadvantage in the mating game? 
 
Why would you cite something that malicious? 
 
Either way, light hair and eyes would serve as an indicator here.