Forum Moderators: martinibuster
There are some pages that have been on my site for several years, and I haven't changed once in all that time. But they still get traffic.
A few specific pages with timely info. get updated once or twice a month.
And I try to add new pages once or twice a month.
You don't have to update constantly to do well with AdSense, but it's a good idea to keep adding content.