Shavian alphabet

http://en.wikipedia.org/wiki/Shavian_alphabet

Real quick to learn, alternative alphabet (for English and others) that you can use for fun, or for keeping what you are writing a secret.

Takes 20 minutes to learn, and you have nothing better to do.

Shavian helped me understand the difference between "voiced" and "unvoiced" sounds, which made learning other languages a tad bit easier.

It would be nice if it were widely used, as you would immediately know how to pronounce something rather than have to listen to someone say it first, or guess.  Oftentimes people will mispronounce words they hear, so this would be great.

However the world is full of anti-idealistic cynics that are too lazy to push for progress.