Bigger question: which ones matter? Most apps that implement 1 implement many. Love to see a sample of ad networks and their overlap.

abynav: I can't find your contact info, but if you email me I can help you complete this list. At Mixrank we've been analyzing mobile apps and can build a complete list of all ad SDKs (and which apps use them).

Has anybody had any real success with in-app advertising?

Might come in handy. Thanks!