I wrote a long detailed post about the effectiveness of buying my AdMob ads.  I had contacted admob about it.  Well it seems they wrote their own blog post about the average conversion rates they see for admob ads.  I don’t feel the need to post mine anymore as long as this post is available.

All developers thinking of buying traffic from AdMob, take a good look at the 1% conversion rate for clickthroughs they have posted for paid apps.  Then decide for yourself whether this is effective for your own app in any ad buys you make.