This may be the next thing:
http://meltingpoint.com/pressmirazolaunch.html
Especially note this page:
http://meltingpoint.com/wbhome.html , from which I qoute:
"IMAGINE...
When a customer leaves your web site that you can watch their browsing
behaviour and communicate a message to them relevant to what they are
doing at that time.
This massively increases retention, loyalty and the value of each customer
to your business.
We are the only company in the world with the ability to do this."
What morons!