- Respond to customer feedback in a friendly and highly transparent manner.
- Don't sugarcoat things that "everyone knows but no one admits"; they could have avoided showing the graphic artist photoshopping the burger, but everyone knows that they use photoshop, so why bother? Show everything and customers will trust you more.
- Use social stuff like Twitter to encourage customer feedback. It will create a positive loop that encourages others to follow and interact with their main corporate account.
- Respond before something is actually important. This one isn't showcased so strongly - this isn't a pressing issue by any measure - but they still took the time to respond to it and make a brief, informative, and actually engaging video about it, without some external "we screwed up, sorry" event. Interacting with customers like this before problems arise is simply awesome.
Well done, McDonalds.