Congrats! A 50$/day autoblog. Never thought that this is possible.
Do you have 12K confirmed backlinks (G) or total? How did you build your backlinks?
I checked the back links by yahoo, cuz Google don?t show you too much about your back links, and it?s a long story why?
Also, my site is a 7 months old now and it?s an old domain, I think this give a value for your website.
Also its not %100 auto blog, sometimes I post good content from time to time to looks natural as possible and I have a Twitter and facebook account for this website too! So no one will think ever it?s an auto blog

I?m building my back links manually, I used to contact other admins to link back to me, and I do also comments on blogs in a Simi-automatic way with ?Comment Kahuna?.
In the past I have used MAR and MAS, and I saw some back links from my articles, BUT Google deleted all those back links, and I?m sure that?s because they looks as a spam content (imagine over 500 back link from 500 articles and all of them almost the same, Google not stupid!) so I made a refund for the MAR and MAS, and I have re-invest the money in a unique articles to gain valuable back links, and that?s much better.
I?m using now a private blogs network to post my posts and articles with my back links and I hope it?s worth the fee I pay every month, but I do the other things too.
Building a HUGE back links is the key of success to your website, Tray to use white hate or gray hat techniques, that?s if you are planning to build a website that?s live for a long time.
Success need time and effort to see it, and there is no magic way to beat all the guys in the first page of Google if you are a lazy boy and just dreaming to be a millionaire buy purchasing an eBook for $19 or a stupid software!