Jennifer Slegg reported that Google AdSense has increased the number of channels for AdSense publishers by an addition 300, adding up to a total of 500 channels. Channels give publishers a way to segment their ads and track them for performance and earning objectives.
The thing is, the discussion at WebmasterWorld seems to think that this is a thing given to publishers on a publisher by publisher basis. For some reason, many are reporting only having 200 channels, while others said they had a total of 500 for a really long time now.
I checked my account and I have a total of 500, but I do not know when that was given to me:
In any event, if you only have 200 and you need more, I am sure bugging your AdSense representative might help.
Forum discussion at WebmasterWorld.
Google added a statement to this forum thread on February 17th saying:
We’ve been experimenting with more channels for a small set of publishers. Thanks in large part to your feedback, we’re trying to extend this test to more publishers, especially those who we know are already using channels most heavily. The reason we can’t just roll this out to everyone is that we need to make sure that our ad serving and reporting continues to run smoothly.