Usabilla – Transparent Usability – Visual Feedback on any Webpage, Mockup, Wireframe or Image
http://www.usabilla.com/

Collect feedback the easy way. Get feedback on any wireframe, mockup or webpage in a blink. Features include: a) Participants just point & click to share their opinion with markers and notes, b) Clear visualizations to analyze your feedback, c) Usability feedback in every stage of your design process, and d) Available in 15 languages, any other on request. This has been added to the tools section of Research Resources Subject Tracer™ Information Blog.