[CoffeeDregs]

Quoting from TFA:

    This is the kind of nonsense that results from 
    fundamentally misunderstanding what a logo is.

Rephrasing:

    This is the kind of [blog post] that results from
    fundamentally misunderstanding what a 
    [marketing stunt] is [and then proceeds to market/promote
    the thing about which it's complaining].

After looking at some of the logos, it was very clear that Yahoo was playing around and not seriously testing logos...

[siddboots]

They may have included non-serious candidates as part of the experiment design, e.g. for control purposes, or simply to make up numbers.