and btw, 30k visitors from your app?! Do you mind if you can share the link?
looks like you are not an adsense pro and you dont know the #1 rule in adsense secrets.
I had a notion that unless i make a next-gen game, it is never gonna be a hit. I thought about app stores like this, whether it is apple, android or chrome. I believed I have to make at least the next 'Prince of Persia' clone to get consistent users. Otherwise, its going to be a waste of time.
But, Chrome Webstore proved me wrong. Couple of apps i mentioned is nothing more than simple puzzle games. Most of the visitors are from US. In adsense, it helps a lot if visitors are from US. A single click on black friday fetched me $5.78.
Also, in December issue of digit, they reviewed that puzzle games has a niche of its own in the world market. People do play puzzle games and they can spend hours on playing them.
Digit encouraged me to post more apps to get 'more chance of winning'. So I uploaded many simple javascripts games (some of them had genuine graphics and ultra cool). Even from the uploaded games, I thought, people gonna play games which had heavy graphics and all.
But I was completely wrong. User base of couple of games rocketed up. After Digit contest, they gave me sure prize to an app which had heavy graphics on it.
There after I thought about putting the userbase into profit. I simply converted those packaged apps to hosted apps and redirected them to my site. I get 800-1000 visits from a single app per day. 80% of them are from US. My app's users increase at a rate of 400-500 per day.
One thing, I love about this model is that, I have NO WORK at all. I simply watch the users come and go. I mean, lot of people say, you need to be a SEO guru, to make profit from adsense. Even doing SEO take lot of times a day like 1-2 hours a day. Then you have to be afraid of threats like PANDA UPDATE.
Now, I simply watch my earnings grow. The only thing i had to install was statcounter. It tells me if some visitor is trying to clickbomb me. Couple of times, it happened, and i just reported it to Google.
Another important thing about this model is that, you can move your page/site to another domain with ease and in a matter of seconds. You never have to be worried about losing visitors. Moving a domain is costly in SEO model. you risk of losing visitors.
That concludes my story.
Why have not Digit still announced the results??
I contacted their customer care and they told me that the winners of galaxy tab will not get the subscription. 
HOW can they break their promise?