I'm working on a little side project where you can share snippets of your design to test them for clarity (5-second tests, basically). The idea is you can go through everyone's designs, answer some questions about them, and then get feedback on yours.

Not sure if it'd be helpful for what you're looking for (and I'm just getting started so there aren't a lot of posts yet — working on that), but hey, worth a shot. IsThisClear.com