The rage to milk money from Adsense continues into 2008. While there are many different ways to do this, it's no secret Google is keeping a watchful eye on spam sites which automatically generate pages consistently on a daily basis.
Every now and then, Adsense 'experts' would introduce a 'fresh' new way of generating pages which Google "has not caught on yet", be it article, directory or backlink generators.
While these software are very good at what they do, you can't solely depend on them for long-term success. It's a natural tendency that automatically generated content just doesn't look like quality pages with highly informative, up-to-date content, but it's my personal observation.
Most run-of-the-mill, ads-on-topfold Adsense sites lack substantial sections and deeper structures to be interesting enough to make visitors think they should come back to check them out more often. While generating as many pages as possible is crucial to get them indexed and thereby build substantial presence in search results, these types of pages should only complement principal content that reflects what your site stands for and the selling point it serves to maximize its overall value. There used to be a question that goes, "Is building Adsense sites a business?" My answer is: Adsense is secondary.
Of course, like you I do want Adsense to be my primary source of income. The secret is in emphasizing content ...