A few more things I'd like to add on Write.as in the near future:

- Auto-linking fediverse handles in bios (need to resolve handles to fetch profile URLs; store usernames)
- Support mentioning fediverse users (resolve handles, send mention activities, shorten and link handle URL)
- Make canonical handles more discoverable on custom domains (searching for something like @blog@example.com returns correct @handle in webfinger request, or whatever will make this work)