This. For the last month I've been working on a big enterprise Flash flex application that talks to a PHP backend.
It seems that flex mxml is a good idea, but once apple decided to kill flash, the developer community jumped ship. Thankfully adobe gave flex to apache, and a small community lives on.
The interesting opportunity seems to be that there remain quite a few good consulting opportunities for flex devs.
The employers are getting a little anxious about finding devs and many are willing to work with you no matter your time zone :)
There's this weird dichotomy in tech: we're heavily fad-driven and obsessed with the latest, newest, cool, hip "stuff" on one hand, but on the other hand, no old tech ever really dies. Or at least, it take a LONG time to completely die.
So basically, any tech more than about 4 years old is in this weird zombie state where it isn't dead, but isn't "what the cool kids use" anymore.