Every time in reply to my AdSense application, I got a copy of the same mail that contained a list of possible reasons for disapproving of it, of which only one seemed relevant to my case, and that was it : ' Insufficient content '. What Google means by it isn't clear to me. Could anyone clarify whether it means the No. of posts or the word count of each post ? If it is the No. of posts that matters most to Google, I may break longer hubs into smaller ones and thus make their No. go up to please Google. But before doing that, I need be sure of it.