Changes

Many people believe that the primary use case for private browsing mode is viewing pornography. While viewing pornography may be a popular use case due to the nature of content on the Web, assuming that this is the only reason that users need private browsing trivializes the overall feature. For instance, users may wish to begin a private browsing session to research a medical condition, or plan a surprise vacation or birthday party for a loved one. Use cases will range from users [https://bugzilla.mozilla.org/show_bug.cgi?id=330884|cheating] on their spouse , to users buying engagement rings. Given the breadth of our user base, specific use cases are likely to be extremely varied.

===Entering Private Browsing=== A private browsing session should be initiated with a menu command called "Begin Private Browsing" above "Clear Private Data" in the tools Tools menu. This option can either change the currently running instance of Firefox, create a new window, or create an entirely new instance of Firefox depending on how this feature is implemented. ===Making Sure the User has the Correct Mental Model=== Directly after entering private browsing mode, a dialog box or [http://blog.mozilla.com/faaborg/2007/03/06/would-you-like-to-redesign-notification-in-firefox-yes.-not-now.-never./ notification] should display, clearly explaining the scope of this feature. It is very important that the user understands that this feature enables local privacy on their machine, but that their ISP, corporation, or government will still be able to monitor their activities online. We don't want to have whistle blowers fired or dissidents jailed on account of bad UI. We may also want to consider not shipping this feature in certain regions where misunderstandings over the scope of this feature could have serious ramifications. ===Theme Change=== When Firefox is in private browsing mode, the theme should change so that users can tell that they are in this mode using peripheral vision. This change in visual appearance could range from turning the location bar black, to the entire browser window. Here are some conceptual mockups: