Provide detailed status information on the status board
I've been hit several times by outages recently. Well at least I think I was - I can't actually tell for sure whether the issues that I'm facing were due to the particular outage. The information on the status pages is often insufficient to be able to determine the impact of an outage.
If something was down, tell me what was down. Tell me why. Link to a proper document of the cause / effect.