Note for prospective users[1]:
ATTENTION: Headset no longer uses a shared YouTube API Key.
Due to changes in the calculation and limits of the Youtube API combined with the significant growth Headset experienced in the last year, we are no longer able to provide a single API Key to all of our users. As a result, each user will have to provide their own API keys. This is a one-time, straight forward process which will allow you to continue using Headset without interruptions.
Important: You need to have a Gmail account to use Headset. If you need to create one, please go to this link https://myaccount.google.com/intro and click "Create a Google Account"
(source)
So yeah... I'll pass.