Content discovery is something with loads of room for improvement. You just need to convince me that you've improved it. A major unanswered question is whether it will help at all with discovering people who are not also users of your service. Another is what I need to do to use your service. "Log in and I'll tell you" will lead to a high bounce rate.
It would also help to inform users as to how the process affects them - and their personal data, their account, and what nuisance factors it will introduce to their routine. This does not need to be extensive, it just needs to be there given rampant abuse on Facebook's platform in these areas.