One thing I would suggest is updating the Troubleshooting section of the FAQ.
Prominently including the 10k resistor problem is one.
Something about inductive loads (motors, relays, etc...) potentially frying chips.
The issue with math.h (if it still applies)
How do I connect ... (links to the appropriate sensor pages)
Programmer not responding (should be first item)
Most importantly I would include a need more info link for each question that performed a google search on the arduino site with appropriate keywords.