Morten Just, product manager in Vodafone, Copenhagen, Denmark, spent most of his career as an interaction designer churning out wireframes & diagrams, and also co-founded Imity, a Bluetooth-enabled social network for mobile phones in 2006. He shares how to wireframe in Google Docs: “To begin working on a wireframe: Open template you want to use; Click 'Sign in'; Choose file > make a copy; Make your wireframe; Packing it up. When you’ve several individual wireframes it can be a neat thing to pack them all up into one single document that you can send around, have people print out, or even present in meetings. Since there’s no way to import a drawing into a presentation yet, here’s a trick using web clipboard feature. You'll still be able to edit the imported drawing should you need to: Go to File > New Presentation. A blank presentation opens in a new window; Switch back to your drawing and select everything; Click web clipboard icon > Copy to web clipboard; Switch back to your presentation and paste your drawing using the web clipboard,” writes Morten Just.
More info: wireframe templates