@oblomov @itchio I want to support this, but that'll complicate the logo situation - currently it shows the Mastodon logo, which would not do for other services.

I would suggest instead an Other Fediverse sort of option (incorporating the webfinger suggestion from another reply here), which could use the generic link icon that's currently used for one's website, or one of the proposed Fediverse logos. Hopefully other specific Fedi services can get dedicated fields eventually too.