Tippin.me by Sergio Abril

Tippin.me is an experimental Lightning Network tip jar that provides an easy way of getting tips over Lightning Network. Signup within seconds with your Twitter account.

With this extension enabled, every tweet at Twitter.com will have a Tippin.me button, so you can send that user a tip (as long as the user has already signed up in Tippin.me). Once you click that button, a QR-code linked to that user will pop up.

This extension is also compatible with Joule, an amazing extension to control your own Lightning Network node remotely, so if you have it installed, it will automatically open whenever you click on a Tippin.me button.