Relay selector upon posting enables a key Nostr feature; the ability for posters to respect your relay.

Relays as a profile-level, rather than a note-level setting, really disincentivize relay hosts as it becomes hard for people to abide by a topical (e.g. knitting) or anti-topical (e.g. anything but bitcoin ads) relay.

Does habla.news have an About page? I have no idea how you select for posts (anything with markdown?) or how I can post, and don't see a way of finding out.