Answer for: The "Don'ts" of successful web design
#8 Use the phrase "my user won't
ever..."
Examples:
...have more than 2 email addresses
...have a username longer than 25 characters
...put crazy, weird characters into anything ^$%$ß∂åß∂∂©©ß¥¥ˆ´∑∆˜∂瘵.

Comments |
Leave a comment
Well said!
It's easy to test a web app taking just the steps an "average user" or a "reasonable user" would take.
Much harder to account for crazy characters, super-long amounts of text, HTML tags, sql injection, javascript injection, etc.