One of the most annoying things about the modern world is that pretty much everything you're likely to use these days, from your network login at work to your webmail account to your bank's website requires a username and password before you can actually do anything. Way back when this functionally didn't used to be such a big deal - people chose easy to guess passwords for their accounts and left it at that. Later on, admins discovered that crackers probably wouldn't spend hours on end guessing passwords, they'd spend a few hours writing software to do it for them (which …