The guide will be refined for sure. Spies are generally not allowed to open gates (of any kind), but they have two great uses still. One is to scout the enemy positions with their great sight range, another is to spark unrest in a city in combination with assassins sabotaging public order buildings. We generally don't require screenshots here at the .org, we're not nearly as paranoid as the TWC guys :) That being said, everyone loves pictures! I'll include part about screenshots and Fraps.