When you look around Amazon.com, and show an interest in something, there's
always a part of the page that says "people who bought this also bought that
.."   

How do they do that?

Do they really build tables of related items dynamically from purchases?  Or
do they have products categorised and just randomly pick products out of
categories similar to the one you're looking at?

Or do they do it another way?      Or how do other online stores do this?

Reason for asking:  I am building an on-line store, and think it would be
good to add this functionality if it's not too difficult.



Cheers

Mike Kear

AFP Webworks

Windsor, NSW, Australia

http://afpwebworks.com
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