Omnigraffle is a great tool for quick sketches, but also for wireframes. Unfortunately, it did not come with stencils for facebook, and those available do cost some money. I needed one to quickly sketch a facebook page for a customer of mine, so I decided to create my own document. I haven’t converted the shapes into stencils, but put all the elements into different layers, so it should be easy to replace them with your own texts and images.
Here’s the result:
Feel free to download and use the file – Facebook-Wireframe.graffle