You can easily spoof any MAC address you want. You can create a type of virtual adapter on top of your physical and assign it whatever address you want.

It might be quite handy. Find the street address of those websites that dump viruses/trojans/unwanted software on your PC and pay them a visit. Nothing more satifying than a seach and hunt then catching someone who has done you wrong.

Something I recently learned:
You can have hidden cookies and files stored on your computer.
Not through the browser, but through Adobe Flash.
They aren't called "cookies", but use the name "local shared objects". Websites can access these to track your browsing habits.

How do you remove these cookies?
Not through any link to an Adobe menu. No, there's no shortcuts to a control panel. Even right clicking "settings" within a flash webpage doesn't get you this menu.

It is kept well hidden from you, the computer owner.

You actually have to go to Adobe's website to change those settings remotely on your computer.
The link is here:Adobe - Flash Player : Settings Manager - Global Privacy Settings Panel

I use Firefox with the No-script flash blocker, but I still had a bunch of crap stored by blocked websites.

CCleaner should wipe that out, but it will also wipe out everything else (stored passwords..etc..) unless to exclude your trusted sites from the clean-up list.

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