site traffic versus ad impressions

[Publisher]

My site traffic (from my isp's stats) is about 3 times the ad impressions reported by Google. Does this mean that pages appear with no ads on them?

What is the relationship between the two?

Thanks

[hunderdown]

I assume you actually placed ads on every page. I also assume that you are talking about page views, not hits, because hits would mean that every page AND every image request was being counted.

Even if those assumptions are true, you can't directly compare traffic stats with ad impressions. Your traffic stats, for example, probably include visits by search engine bots, which would not be counted as ad impressions.

I would look at the overall movement of the traffic and the impressions--they should go up and down roughly in synch. So long as they do, then this is not an area you need to worry about--I just don't think it's worth the energy to track down the source of the difference.

[eeek]

Anybody browsing with javascript disabled will not see anything adsense ads nor generate an impression. But search engine spiders are probably the bulk of the extra traffic (at least they are on my site).

[incrediBILL]

Site traffic on your server stats is a complete list of traffic and the Google Adsense impressions are merely a subset of that traffic. Pages don't show AdSense when robots and scrapers crawl, if javsscript is disabled, filtered out by personal firewall or anonymous proxy servers.

The easist way to figure out how much AdSense traffic you reall have is install Google Analytics on your pages as that's a javascript traffic measuring tool and doesn't track anything that can't display AdSense.

[david_uk]

Also, a lot of visitors may well click out before the page has loaded. Your ISP's stats may register an impression, but Google may not have loaded enough of the page to register an impression.

[Publisher]

Just for the record, I was counting unique visitors. Thanks for the info.