咩叫Tracking Cookies？？？

Tracking Cookies - the unhealthy kinds of cookies that track your Web browsing habits.
Some call them "profiling cookies," "persistent cookies," "long term tracking cookies,"
or "third party tracking cookies." In some sites they call
them "third party cookies" or simply "tracking cookies." No matter what they are called,
these cookies are typically sent to your computer for advertising or
marketing purposes, and they will stay forever, unless you take the
initiative to remove them manually.

So how is this going to affect my computer and me?
Although, most Spyware is relatively harmless provided you
don’t mind having your every Web site visit tracked, or every
moves that you’ve made to be watched by your friendly marketers?

But some can gather information about your e-mail addresses,
keystrokes, cookies, passwords, and in worse case…
your credit card numbers, Internet banking account number.

2006-11-25 03:55:44 補充：
http://hk.knowledge.yahoo.com/question/?qid=7006050300570