Actually, it works flawlessly. At least, that's what I found out recently. I am using it on Arc Linux and FreeBSD systems. If something like flash software works on FreeBSD (which is more of a server system), it will surely work on any Linux. (And if something is available on relatively less popular linux distro like Arch Linux), I am sure it works on Ubuntu and Fedora.
To get access on users webcam while webrtc isn't ready.