I have an adsense account that now has ads for multiple domains. Now, for all my ad/link units, I have them in custom channels, which i usually call something like:

domain - page - location

These would seem to be really effective at tracking ad performance, etc, as if I have two ads on a given page that I want to track, I may have the ads 'channelized' as follows:

top banner
> domain - page
> domain - page - top

inline links
> domain - page
> domain - page - links

Which enables me to see overall page performance, as well as more defined ad performance based on the channel I look at.

So, my question is regarding url channels... they seem kind of pointless to me, at leats in my application. I guess they could be used, say define one per domain so that I can easily see the overall adsense performance of a given domain, right?

Am I missing something useful about URL channels, and for that matter custom channels in relation to how I am using them?

Thanks for any pointers!

All the best,

paul