I know the power of custom channels, but I am unable to track what blog is giving me what click since adsense on blogger just uses your ca-pub. Is there a way around this? Is it within the TOS ?
uRl trracking is the best way. Just track the home page and this should provide you details for the whole blog.
That is correct. Also, if you need to see performance of individual pages then you can create url channels separately.