Most of the Appcelerator community i'm in touch with use the free Titanium builds instead of paying for an Appcelerator license: http://builds.appcelerator.com.s3.amazonaws.com/index.html#m...

Titanium has always been a pretty advanced product however ever since Appcelerator introduced it's licensing/arrow stuff, Titanium (and Alloy) uptake seems to have fallen off a cliff.