Quick TOS question

Can I stack wide skyscrapers?

[creepychris]

I was looking at the TOS:

Up to three ad units may be displayed on each Web site page, but no ad unit shall contain any advertisement in common with any other ad unit. Serving two or more identical ads on a single page constitutes double-serving, which Google does not support.

And I am not sure how to interpret the last sentence. I want to stack two wide skyscrapers. Is that OK? Or is that what they mean by identical ads?

[FromRocky]

Stacking two wide skyscrapers is not agaist TOS. Identical ads mean the repeated ads which has the same titles, contents, display and landing URLs.

[creepychris]

Thanks FR,

My next question is: then why have that stipulation in there? We don't control the ads that are being served. Google does. The only thing I can think of is that some ad networks (like Burst) serve Google ads and if you are using both adsense and those ad networks, you'll end up with a double serving. Is that the correct way to interpret that?

[FromRocky]

Is that the correct way to interpret that?

Yes, this is the one but it's not the only one.

[annej]

but no ad unit shall contain any advertisement in common with any other ad unit

I thought now that we can have more than one ad that Google has thigs set so that the ads are different on all three ad units. So this just doesn't make sense to me.

[maximillianos]

Technically if you used frames you could show the same set of ads multiple times on one page.