Just read through the overview and the new FlexUnit4 alpha is looking pretty good. Using meta tags to create Tests and Suites and the addition of user defined tags, makes me think that I have to start including this in my own project workflow. I wonder how many Actionscripters actually use Unit tests. I'm sure there are a lot of Enterprise Flex developers but any pure Actionscripter takers?

[Update: Updated the link to FlexUnit]