Not only are the Flex tools free, but Adobe will contribute source code from the latest Adobe ActionScript Virtual Machine to a Mozilla project name Tamarin . A lot of interesting things going on these days. Java and other proprietary software going open source or "free for personal use", Microsoft and Novell partnering, Linux popping up everywhere, damn! Open source has these corporate guys worried! Best part, they get workers, advertisement, and innovation for free and will eventually destroy true open source.  Suckers...

You will notice there are open source alternatives to the products they let go for free... Flex for free running on Tomcat = destroy the OpenLaszlo comptitition! and doubtfully Ajax ...