Hmm certainly willing to, but I don't have much. Mostly just that professional graphic designers didn't seem like the right audience since they already have networks of peers who can give better feedback. Oh, and the apparel-industry-specific stuff from below.

But something like an engineer asking a colleague which web design they just hacked up looks better would be a much better fit.

I had an idea once about something similar, I called it Design Picker, where you'd basically use some combination of crowdsourcing and "algo" to help you make design decisions. I had the domain for years, but I could never come up with a version of the concept I thought actual designers would actually use, so I never built it.