Custom Adsense ads are OK?

I have made several ads and still can't figur this one out

google_alternate_ad_url = Means what?

google_ad_format = "468x60_as"; and this is what?

Are these adds being changed to the user?

Oh funny I just noticed... I guess it would be like the ads in this bb... how are they created

 

Alternate ad URL links to a image that will show up on your ads area if there are no relevant ads.

 

- which ad to display if Google cannot serve ads on that particular page

google_ad_format = "468x60_as"; and this is what?
- pretty self-explanatory, the format of the ad to be displayed (ie the different sizes available from Google)

 

just use the interface in your account if you're confused by the code.

 

So you can modify the code? Or is this a google code option I can add when making the ad?

 

Changing the code is against their TOS

 

Sure, you can modify their codes all you want, just don't get caught.

 

not getting caught is a tough process