Realtime info: Kickstarter shows real time info on campaign pages making it obvious that you should be part of something (immediate feedback). Obviously this campaign by Zach Braff may be on fire, but still nice to observe. 

Ask your potential customers: Photoshelter (@photoshelter) ask their visitors on the Tour page what their top questions are before signing up. 

Sent in by Stock Performer.

Feedback: Instant feedback form on the Stockperformer (@stockperformer) beta when you’re logged in. When you click to type it opens a wider window for a better experience.