[decimon]

A way to protect yourself would be to only run a live cd version of some operating system, so that every time you boot up you have a clean install, and turn off your computer when you're not using it.

That's true. But you'd have nothing like bookmarks stored.

[E. Pluribus Unum]

That's true. But you'd have nothing like bookmarks stored.

You could store your bookmarks on delicious.com and reconnect to your account when you booted up.