Most of the time it works, but sometimes it fails in a confusing manner, or Google says Try again later.

works only rarely
even with the service installed on my pc

I'm not getting how to use it; plz consider adding a video tutorial.

Doesn't work most of the time

It doesn't work in TOR!

It's a nice idea, although Google just blocks me from getting an audio catpcha every time I try to use it.
That being said: what's with the new permissions in version 0.4.0?