This is a massively useful new tool and shall replace any centralized password manager one might still use to handle Steem keys. Thank you for bringing so much development forward to the Steem blockchain. It is incredible what you guys pull off. Looking forward to your witness update!
I hope that the Brave Browser will include your extension. As it is build on Chrome it should already be entirely compatible and can be hacked into the browser by replacing one of the default extension folders.