In a similar vein, I highly recommend re-reading "How to Win Friends and Influence People." Incredibly useful in conversing with everyone, small children (we have a 3-1/2 yo) and grown executives. I ignored it for years before reading it (actually listening to the audio version, which is great, then reading it) 10 years ago, dismissing it as "fakery and manipulation" with the sheer confidence of ignorance. Its good stuff, guys, and sounds fairly similar to the style of advice given here.

There's one easy way to get people to use long passwords. Tell them to figure out an easy phrase to remember and add it to the end of their password every time. Done. That way, "fred" (a terrible password) becomes "fredthehungergames" (actually a pretty good password). Same at every site. Increasing the length adds security far more than increasing the complexity of each character.