>I did not say you couldn't build web applications if you were a jerkass who was cavalier with the security of his users' data. I said you shouldn't.

That would have left us without reddit, I don't know about you, but without it the Internet would have been a lot less interesting.

Compromising user data isn't a prerequisite to building something cool. Negligence is still negligence. Drunk drivers make it home without killing anyone more often than not.