Today Google increases the Adsense custom channels to 500 custom channels per product, and 500 URL channels for AdSense for content which before have been limited to a total of 200 custom and URL channels. Adsense channels are best reporting tool to track your earnings. With the help of custom channels you can track ad performance and enable advertisers to target their ads for maximum impact, while URL channels enables deep-dive into the performance of AdSense for content on your subdomains for you.
As Google raised the channels, now it’s possible to monitor more deeply how different formats, ad styles, and ad types perform. This will also help to the publisher who have lots of Adsense enable websites and due to the 200 custom channels they was not able to track all sites. Today I am really happy as the now Google enables to play with more custom channels.