Looks good David. I really like the concept. Here's a few more ideas and suggestions:
1) Top mobile ad networks might vary by region, so it would be good to capture this data somehow. E.g. Madvertise is excellent in Germany and the rest of Western Europe to a lesser extent, but has no (or little?) coverage anywhere else. My app is geographically focused on the UK and so I have a more targeted interest in ad networks. This type of data would allow developers to choose an ad network based on their user base.
2) How about a way to record actual data from these networks? E.g. fill in an anonymous form for the type of app you have (e.g. games, tools, weather, news, etc.), geographic location of largest section of user base, impressions last month, epcm last month, fill rate last month, income last month, etc. Probably needs a bit more thought, but having one place to collate real world returns would be sweet.
I'm liking this though and admire that you can find the time to undertake such projects![]()