We do have a issue filed to allow users to tag recordings with certain metadata, like noisy or male/female voice. https://github.com/mozilla/voice-web/issues/814

It is something we are still working on.

> The other thing is that it's very cool to see the "you helped us reach out x% goal" thing but it locks up all the previous / next shortcuts which means I have to switch back to the mouse after 5 entries.

That's a bug! Would you mind filing one here: https://github.com/mozilla/voice-web/issues