So I was looking at a plugin for Firefox named "Collusion". Collusion allows you to watch tracking cookies, and see what websites can track your information from website to website.
http://www.mozilla.org/en-US/collusion/demo/
I decided to visit a few MS related websites....
Southperry.net
maplestory.nexon.net
Basilmarket
And lastly, what happens when you visit all 3.
Spoiler
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