Earlier this year I found myself using the wireless internet at a Moto service station - the access is operated by Spectrum Interactive. Once you register, they send you a helpful welcome email with your password in plain text:
Sending your password in human-readable form is bad enough if emails are lost or intercepted, but it also indicates that they're probably not encrypting the passwords in their database.
This way, if they ever get hacked an attacker will be able to read the passwords of all the users and try them against other accounts they may own.
Spectrum Interactive, please read this: http://en.wikipedia.org/wiki/Salt_(cryptography)