Attached to this post is an excellent document for using the new ChartBoost Extension for the Android Export Module to connect to that ad system.
Credit for this document goes out to Fernando Vivolo. He has recently began working with Clickteam to get a number of new objects created for the Android Runtime and help us with improving the Android Runtime.
You can also find examples for Chartboost in your examples folder under your MMF2 Developer folder on your hard drive.