I'm not an IA or designer by trade at all (Degree in Finance, work in Marketing), and I found that Keynote Kung Fu was incredibly accessible by almost anyone (m

I'm not an IA or designer by trade at all (Degree in Finance, work in Marketing), and I found that Keynote Kung Fu was incredibly accessible by almost anyone (myself included). I had poked around in OmniGraffle before, but KNKF was just so much easier to use, especially for whipping up quick visual examples of things I want to show. True that the final product is more styled, but that's when you have to work closely with the designer to make sure they understand you're not implying that's what the final visual style needs to look like. I've also used KNKF for doing mockups for usability testing, which works very well.