Is this against TOS?

[Leva]

I make a good portion of my site income off of the firefox referrel button. The button performs better if it's the only ad on my index page. However, you only get a conversion if someone who has never downloaded Firefox clicks on the site, downloads it, and runs it.

Last time I checked a good portion of the people visiting my site already have Firefox installed.

Is there anything in the TOS against serving two versions of the index page, one for Firefox browsers and one for all other browsers?

The "Firefox" index page would show a single adsense banner.

The "All other browsers" page would show the firefox button.

I'll e-mail adsense but my e-mail's currently being spammed & it keeps filling up. My ISP's supposed to fix that, but that's a vent for another day.

Leva

[JollyK]

Let us know what the Google people say, but I definitely serve different ads based on the end user. For example, people in my office subnet do not see Adsense, and the same goes for IP blocks in certain countries.

I just have a little ad include script that is included in the page. The script checks for whatever (IP address in this case, but it could also check for browser) and displays the appropriate ad based on what I tell it.

I don't see that this is any different from having rotating ad banners where one user will see a different ad than another, but I would be interested in what Google thinks.

JK

[Rodney]

sounds like you're just targeting your content to your audience. Doesn't sound fishy to me.

[FourDegreez]

I only show the Firefox ad to non-Firefox users, and I can't imagine why Google would have a problem with that!

[leadegroot]

I've never noticed anything in the TOS suggesting a problem with that, certainly I only show the firefox referral to IE users - what else would be the point?

[Tearabite]

whoaa.. Deja'vu!

I was just doing this myself up to a few days ago!
as far as i was able to tell, there is no problem with this (and nobody mentioned it in the few posts i made about it)..

I ended up stopping because I had a problem with the PHP i was using to serve up the different ads based on the browser. (it would die after about 24 hours and start showing the same add to everybody)