I.M. Testy talks about UI automation and ROI

http://blogs.msdn.com/imtesty/archive/2008/03/28/gui-automation-and-roi.aspx 

I.M. Testy says concisely what I have been preaching for a long time. Targeting the GUI for automation doesn't make sense while it's a moving target. Move your tests up the stack. Having more faith in dogfood is something I hadn't really thought much about. Dogfood is yummy. Make sure you eat your own.