Re: ONLINE-ADS>> cache counting standards

Hermes (hermes_at_all-yours.net)
Tue, 09 Jun 1998 15:00:40 +0200

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At 17:27 08.06.98 -0500, Ulrich Voss <voss_at_vocalweb.de> wrote:

>Matchlogic solution seems to be not that far away from the other
>solution, but as long as they don't tell you *exactly* what they use,
>nobody will really know.

>(BTW. I wrote a comment to the IAB guy named in the proposal, and
>suggested, that it could be better to just adopt the German solution.
>It's free, it works, it's there! I never got an answer, perhaps it's
>not cool enough to acknowledge, that the thinking has been done
>before ;-) ).

Are you referring to

http://www.netgravity.com/standards/WD-countmethod.html?

I also commented on this document and contacted the author twice to no
avail. I tested the proposed anti-caching headers (Expires plus Pragma plus
Cache-Control) and found out that it seems to be overkill (at least on
Netscape 3 and 4). Clicking the browser's back-button or even resizing the
browser window resulted in a banner-reload.

I first noticed this when we displayed AdBot banners at our site. Their
impression count was always *way* above our page counts. Sort of an early
make-good for the money they still owe us now :)
By telneting their ad server we found out that AdBot also used a
combination of Expires: and Pragma: headers.

We implemented a different anti-caching technique. As a Web publisher we of
course support the idea of cache busting. But counting a fresh banner when
a user resizes the window is going too far and has a very negative effect
on click through. Browser bugs (constant reloading of animated gifs) might
add to this problem.

-- Dr. W. Soldierer
All-Yours Internet Solutions

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