Constructive Criticism and JTO

I've been entering designs at the Threadless.com t-shirt competition lately (2 designs so far). Mainly because I'm kind of broke and need to buy a new design computer for home, so I'm flinging stuff down every avenue that pops into view. Its fairly easy to mock stuff up and submit (that's what I do at work all day anyway) and its free and the win is pretty damn decent, so what the hell. The comments were interesting during the voting process. Many of them reflect the kind of criticism that scrapes my nerves, the little gently "constructive" advice that suggests ways to clarify in order for a design to make more sense(!?!). So I get stuff like "the unicorn seems a little creepy, I like the colors, though : ) !!". I've heard this sort of thing from fellow students, clients, and occasional random strangers for decades. Save your breath- I'm into nonsense.