I finally found some time to install flex yesterday and I found it really really interesting!
Running a huge photo competition I've always had THE big problem: users getting mad (and doing bad http things) trying to post (too) big images.. and finally the solution came! I can't believe it was so easy and fast: all excited I created a small application that works really good with rails (on localhost for sure, when running on dreamhost *DOH! * let's say once out of five attempts...) to tell the truth the application I run on skeefo.com (to do some testing) uploads all images (and any other file) successfully to the server (you would see the uploaded xxx.jpg http://skeefo.com/writable/xxx.jpg but progress bar and confirmation label not always work..)
I'm having fun and I think the idea of skeefo.com should grow, but I don't have time to do this all alone.. anyone wants join? I want to find out how to post other variables along with the file, interact with RMagik and so on..