This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Dealing with the Back button is one of the bigger problems of writing clever Web pages, using things like Applets, AJAX etc. You can write your code in such a way that pressing Back has less bad effects. You can also programmatically add/modify history entries, to change what Back does; I'm no expert on this, having only read about it, not done it, and I suspect how well it works varies between browsers and their configurations. Lastly, you can get your app to pop up a new, undecorated window with no Back button; this suffers from (a) user may disable pop-ups, and (b) user can still go Back using keyboard shortcut.
Betty Rubble? Well, I would go with Betty... but I'd be thinking of Wilma.