From Mastodon

Enable Bluesky users to follow you via the bridge by following @bsky.brid.gy@bsky.brid.gy

Bluesky users will find your Mastodon posts from @user@domain.tld as @user.domain.tld.ap.brid.gy

From Bluesky

Enable Mastodon users to follow you via the bridge by following @ap.brid.gy

Mastodon users will find your Bluesky posts as @bluesky.user.name@bsky.brid.gy

From Threads

Enable Mastodon users to follow you via Fediverse sharing

Mastodon users will find you at @user@threads.net

Enable Bluesky users to follow you via the bridge, enable fediverse sharing first then follow https://www.threads.net/fediverse_profile/bsky.brid.gy@bsky.brid.gy

Bluesky users will find you at @user.threads.net.ap.brid.gy