I'll be honest with you. Adsense is tough. But to do autoblogging for me is simple as I write software. I wrote a tool that scrapes and spins data then checks keyword density and autoposts on my blog. My tool even resizes and renames images and if I like it converts the format. So Basiclly auto blogging in a nut shell is posting keyword rich content on the blog in an automatic fashion. As the blog ranks for your micro niche. You place adds and pray to the google gods that people click on your links..... Lets be honest.. you will make pennies. I would shoot for cpa marketing buddy. Here is how I would do this:
1.) Buy domains that have a keyword in the domain. Also that are relevant for my cpa offer.
2.) Build a small site and seo the heck out of it. This site is for your cpa offer. On this site I would have a clear link to the offer.
3.) Make sure to target low end keywords but put them in phrases with med and high competition keywords.
In the beginning you will get random clicks on your offer. In the long run if done right each micro site for each offer you do will bring you 50 - 100 a day. Your SEO keyword strategy is very important. You can rank for low end keywords almost instantly some times. If you use those low end keywords properly you will naturally rank for the med then the high keywords.
Good luck!!