This is nice, but what would be really nice is if they gave out slide rules as part of their promotional material. Preferably something 5-6", with W1/W2 scales as seen on the Faber-Castell 62/83N... yeah.

A quick test: When I search for "data structures", or "structure data", for that matter, and filter by "advanced", I get "Advanced Data Structures" as the first match, ahead of stuff on crystals and the like. That's good.

Their "learning paths" seem like a positive-value thing, and surprisingly they seem half-decent. It's not the same as the stickied posts at the top of some forums at programming tutorial websites and the like, telling you how to get started in some subject by choosing between one of 10 recommended books. It's... an actual learning path.