http://www.phonegap.com/
Seems to be the best way to build cross platform mobile apps around. It's open source, free, and includes a cloud based build platform that will build an app for multiple mobile environments all "in the cloud". Easy.
http://sethgodin.typepad.com/seths_blog/2009/09/the-platform-vs-the-eyeballs.html
Seth riffs on the difference between buying attention and building attention. Useful to share with people who are in the process of "getting it".
