How accurate are adsense impressions

Does Google remove impressions created by robots and spiders

[lgn1]

Just wondering if the adsense page impression is 100% from humans. Does Google count page impressions created by spiders, robots or other means?

[Chico_Loco]

Well, it wouldn't track most bots in the 1st place because the code is a link to JavaScript file with certain parameters passed along to it.

And since most bots don't execute JavaScript, they wouldn't get tracked. And even the ones that did fetch the .js file would need to pass all of the included parameters along with it in order for the tracking to come back as a page impression for your site.

That's not very likely.

[IanTurner]

In most respects Chico_Loco is correct, but it wouldn't be very hard to create a bot that would register as adsense impressions.

[Chico_Loco]

In most respects Chico_Loco is correct, but it wouldn't be very hard to create a bot that would register as adsense impressions.

Hence the reason I said "most bots don't execute JavaScript, they wouldn't get tracked", and not "all".

Indeed deceptive robots do exist.. but they can be so deceptive that they are virtually impossible to detect and eliminate.