I add mine to a public Git repo. It's free and updates are easily cloned.

I pay for https://karakeep.app/ (also open at https://github.com/karakeep-app/karakeep/), create a list per friend, and then share that list to the friend (who can also subscribe using an RSS feed). Items to share are added to the respective lists. URLs added via Karakeep are automatically captured and archived in my instance.

This model also enables federation between Karakeep instances, if so desired. Mobile apps are available.