cookies.gif (2585 bytes)Cookies - What are they and why you should care   
Cookies are small pieces of text which are stored in your computer as you visit web sites. 
A web site will place a cookie into your machine to help the website recognize you .

Russ Portrait



The Good Side...

This can be very useful (and necessary) when customizing a web site or accumulating items in a shopping basket. Without cookies, a  web site would have to treat every person as a "stranger", and would be unable to present a user with personalized content.  For example, if I choose to be an ongoing customer of, I consider it "pretty good marketing/customer service" that they can:

Amazon is able to provide these features by writing and reading a line of text (cookie) on my machine that contains not much more information than: " customer ID=some_long_unique_number"

The Bad Side...

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The greatest concern with cookies is when they come from third party web sites.   For example, an advertising company may handle the advertising banners you see displayed on thousands of different web sites.  As you visit a web page, the advertisement banner (And its own cookie) may be downloaded from the ad_company's server.   It is possible for a major company such as Doubleclick/Google to develop an extremely detailed profile of your web surfing patterns including which sites you have visited, what key words have you searched for, etc. 

A well-written cookie will contain only obscure user IDs that make sense only to the web site that reads/write that cookie.  A poorly written cookie will contain your real name, real email address etc.  Also a word of caution, you may discover domain names in your cookies which suggest that your computer was used to visit "adult_only sites"  Your computer may or may not have actually visited such sites.   Many such cookies can be placed into your machine from the advertising banners from an "accidental page"  For example if a family member accidentally went to instead of, they may have received many cookies from pornography banners.  (I just want to make sure I don't accidentally cause any divorces based on sneaky cookies being discovered in your computer)

For more information

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Russ Haynal -  Internet Instructor and Speaker

Contact me at 703-729-1757 or  Russ 'at'  
If you use email, put "internet training" in the subject of the email.
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