SCVNGR's Secret Game Mechanics Playdeck | TechCrunch
Some companies keep a playbook of product tips, tricks and trade secrets.
Games do teach

Good riposte to Ruth Clark's bizarre attack on games. I'm fairly sure

it's the second pop she's had at games, so maybe she has an axe to grind? Or maybe she's just trying to stir up some debate. Check the comments of the original article and you'll see she certainly did that:

Learning with 'e's: Where AR we now?

Steve Wheeler's take on the role AR could play in our digital future.