Responsive Layouts, Responsively WireframesMisc
The Niehaus Wireframe TechniqueMisc
Three ways to make your wireframes more useful | via @cxpartnersMisc
Fireworks Wireframing KitMisc
UXPin App – reuse photos of sketches in this wireframing appMisc
An interesting approach, taking a photo of your sketch and using it in your wireframing/prototyping tool. I wonder what happens if you need a full-blown spec. I’m afraid it’s not really scalable.