I agree 💯:

✅ open source

✅ portable

✅ users have full control over transparent algos

These are how Brainstorm & Grapevine are designed. A Brainstorm instance is designed to be like a relay in the sense that it’s open source and anyone can run one. But realizing that most users won’t do that, you can run a Brainstorm instance and calculate personalized scores not only for yourself, but also for other users, either for free (friends, family, community) or for a fee.