- Rent the cheapest webspace with pre-installed WordPress¹ (probably around 1 Dollar). WordPress generates RSS feeds.
- Acquire a mail account.
- Get an RSS reader.
- Subscribe to your friends’ content with your RSS reader, comment on their posts via mail.
- Congratulations, it’s a social network. It’s open, federated, resilient and probably less noisy than what we mistakenly call social networks at the moment.
¹ Yes, I know, thank you.