I had lost the Private Key for an account I created late last year when Nostr was still crowded.
I had also registered a user name for this account.
But I didn't pay attention to it, because it was nothing more than a "Hello!
But then a new site was created to search Nostr as a whole, so I searched by my then-username and found that I had posted some of the same unimportant stuff that I had posted back then.
#nostr