I would second comments elsewhere that balsamiq is a good model for this site. I am a paying balsamiq customer. Jetstrap seems like balsamiq but you are buildin

I would second comments elsewhere that balsamiq is a good model for this site. I am a paying balsamiq customer. Jetstrap seems like balsamiq but you are building a functional prototype instead of a wireframe mockup. As is, this could be worth about the same on a monthly basis, and I could possibly see this becoming a hosting site for full fledged pages built on jetstrap.