Leadbolt have a new Android SDK, how hard would it be to develop a plugin. They claim to offer 4-5x more than what you'd make at Admob based on eCPM average. It would also be helpful if we could use ads in a game that would work whatever platform we decide to publish.
http://www.leadbolt.com/
Just an Idea, it seems that although Construct2 is a great design tool, it's not great for monetizing games.