Robert Accettura's
Fun With Wordage

Using Firefox on a shared computer such as an office workstation, library, or school computer lab? Don’t want people seeing what you did/saw? That’s a very good idea. When your done browsing the web go to the “Tools” menu and select “Clear Private Data”. Check the data you want to delete [...]

Perhaps this will eventually make way into Mozilla at some point. It’s a great read. Perhaps it could manage disk space vs. performance much better than we currently do?
Could make Fireffox feel faster.