AdSense has listened to publisher feedback and has bumped up the number of active content channels from 100 to 200.
If you weren’t sure how you were going to track the performance of all of your new pages, your worries are over! We’ve increased the number of AdSense channels available to you, up to 200 active channels at any one time. Use your extra channels to compare the performance of your different ad units, of various page layouts, or to track the results of your optimization experiments.
For those who use channels, they are an extremely useful tool for optimizing and tracking AdSense pages, so you can increase your earnings right down to a per directory or per page level.
And for those of you who aren’t using your channels for testing way to increase your earnings, get started now