Pointer to draft about web measurement

In my comments on the hit metering draft, I said

>   We could also try to eliminate cache busting by
>eliminating the need to measure hits at all.  Suppose we could
>convince web advertisers that they ought to stop paying for hits and
>start paying for _clicks_, with clicks a newly defined measure which
>has a much better correlation to actual ad exposure.

To add a reference: Rohit Khare pointed me to an interesting draft of
an article which discusses payment models for web advertising and the
need for standardization:

 http://www2000.ogsm.vanderbilt.edu/novak/web.standards/webstand.html

Koen.