Bluesky, currently home to the best of the "X-pats," allows you to use your personal domain name as your username. In other words, you can change your username from "@prawnay.bsky.social" to "@pranayparab.com." The problem with this is that it leaves your old username open to be claimed by anyone: If you didn't claim it immediately after making the switch, then another person could take your old username. This is inconvenient for those who have the same handle across multiple social networks,...