Seems it kinda died. I bought a bunch of coins so I could test the platform, it was kinda fun. The Firefox extension never panned out because of some code insecurities.
They have an extension that does the same thing with Bitcoin, iirc. I was going to use it in a project I was working on, but the individuals that hired me dropped their project too so I haven't reviewed it in weeks.
Not dead but sleeping. Firefox users can use the miniWallet which is on the website to send tips. But this did not catch on. So we need to change the concept. Keep your coins for now.