How to write Wiki manuals

To my mind, the best guide we have is Smart Pointer Overview. When our project was hosted on GoogleCode, that page hit about 500 visitors per week. Since then, C++11 was released and many more manuals were published...

1. It should contain a 'story': starting with motivation, each paragraph should follow the narration of next paragraph, from simpler topics to more complicated. Current version looks good from this perspective.
2. It should behave as a cheat sheet. Reader should find information about the most common operations very quickly.
3. In opposite, rarely needed information (like installation) or advanced topics may be referenced.