View source for Promo/Guidance/Screenshots

To make good screenshots please follow those simple rules:

* use the default wallpaper (in most cases)
* include 20px of the wallpaper around it
* use standard color scheme and shadows
* use standard icons, standard windeco
* save as png
* as font, use Liberation Sans, 10pt
* use compositing
* set your language to English if your audience is international