Discussion
no need to buy a bunch of domains, use the most popular clients that provide nip05 and get one in a few clicks. possibly automatable, if there's no captcha.
ok then. But still seems to me as a lose-lose game. It would probably just alienate your users from the rest of the nostr community, since most would be blocked. Unless you are able to create a great federation of servers/relays committed to the same goals, as they did in mastodon.