However, one thing I don't quite get is do people actually click on some link while they're playing game on their phones? Is it just to grab attention of the users so that some brand remains on the user's mind?
But yeah, impressions are definitely considered when buying advertising.
Here, given the rather narrow focused subject, i would say they are fairly good to select an ad that is memorable to you.
Apparently over 30 million downloads people spend 65 million minutes per day  playing Angry Birds. Assume 20% of this is on Android that's about 400 million minutes per month or one click per 16 minutes.
That seems rather high. If true I have to wonder how much of that is misclicks, which doesn't strike me as a sustainable model. Either you'll anno the users or the advertisers will wise up.
So the takeaway from this is to make a well-timed paid release first, _THEN_ make it ad-driven after sales have tapered off to capture any remaining holdouts. Which, it would appear, seems to be the trend on the App Store. Apps that used to cost $0.99 are now routinely being made free.
The main point I took away was this is replacing TV eyeballs, so what is to stop him from creating his own ad network for his game only.
This is like having a prime-time tv show and the ability to do ANYTHING advertising-wise to it, in real time.
That's quite a big chunk of change right there from iOS. It's just nice to see mobile advertising on Android be successful.
* Be civil. Don't say things you wouldn't say in a face to face conversation.
* Please avoid introducing classic flamewar topics unless you have something genuinely new to say about them.
* Please don't bait other users by inviting them to downmod you.
I click the comments link to read useful, insightful, and critical things that others would like to add to the topic. Sarcasm in most cases doesn't fit the bill for me.