Titanium doesn’t have Admob/Smaato support, so it is really hard to monetize free applications without using Webview Onclick Trickery (even then you’re not utilizing the full potential of Admob’s seamless integration). Thankfully, David Ashwood has released source code for Admob and Smaato Integration on his (branch). Unfortunately, the instructions in his posts are clear but not working (some only work on Linux), however I’m using Mac OSX for development, so it doesn’t help me much. Although I had learned java jar files are platform independent, but they didn’t work in my project (but that’s topic for another day). So I figured I’ll give a broad overview of how to get it working:

Note: I’m not sure if each of these steps are necessary, but this is the way I went on doing it, so you’re welcome to ignore any step that you feel is redundant. But please do leave a comment specifying it, so in the future other developers may not face the same problems.

1. Follow Titanium Documention to get Titanium built from source (for practice and setting up paths/classpaths that you need later)
2. Install Android SDK and Google APIs (if you haven’t already)
3. Clone dasher’s fork
4. Checkout the branch
5. If using scons, edit the android/build.xml file to fix the two paths: android.platform and google.apis. They point to the older way If using Eclipse, you can specify these two CLASSPATH variables: ANDROID_PLATFORM and GOOGLE_APIS (as the Titanium Documentation to build from Source (Step 1) suggests).
6. Run scons or Eclipse to generate jars. I got a zip archive at the end of the process in distribution folder. (I don’t know if Eclipse does it, because I did it through scons. I would argue the regular eclipse build does it as well.)
7. Unzip this archive in your Titanium application directory, where the following directory structure exists: mobilesdk/{platform}/{version}. Be careful if replacing files/folders. I created a new directory for the {version}, because if this build doesn’t work for whatever reason, you’ll have an option to fallback on the original Titanium version.

And amazingly, you have Admob support in 1.4.1.1 (the latest version for Mac OSX).

Last tidbit: I noticed that moving these jars are very easy, just be sure to carry the other jars along with you, like the admob-sdk-android.jar and SOMAAndroidSDK.jar. I’m not sure if you need these, but I got rid of some crashes that were happening earlier.