Per discussion on discord; right now, all XMR that is mined will be paid out to TQS holders. The eventual goal is to pay it directly to you when you're logged in, as well as allowing you to configure your default mining status (at least on/off, but possibly also provide a throttle).

As a reminder, the ultimate goal is that users can help power the viva blockchain and apps and be paid to do so just by leaving a web page open.