Where's the "practical" one that site really reflected? I liked scheme as a learning tool and got highest grades. That doesn't change my impression that most of the sites covering it are mental masturbation. Puzzles, or programs for the sake of scheme itself. Where's the stuff to solve real world problems? (OK, mostly solved by other languages anyway... Still: where is the content that really wants a junior to try it…
But for building makets of production systems to see where they are likely to fall over I've never found a better language.
The fact that you have to build everything from scratch is a plus when dealing with the eldrich horrors that lurk in business logic - you think you can use a standard queue? Hahaha let me tell you about a 6pm spike in latency that no one could explain and was driving the cellular network of a tier two city towards failure.