hiveinvite.com is a service that dates back to legacy chain days. Back then, there was no other way to create an account than going through a centralized company which didn't always do the best job accrediting real users, but was very open to create bot accounts.
My idea was that onboarding has to happen from the bottom, each user who can acquire account creation tokens, can onboard real users. From that, hiveinvite was born. The first interface to create accounts for other users without leaking the keys to the account creator. It also featured mass-invite links for communities to hand out on conferences or so.
By now, a lot of alternative options exist. I personally switched to using https://hivedapps.com for the speed of the process a while ago. And today a new Hive Invite Cards service was announced.

While I had planned to give the old code a vibe overhaul in the next days, 's take on the issue looks super slick and it seems hardly necessary to maintain a competing product that does pretty much the same thing but worse. I quickly concluded that it's time to sunset hiveinvite. And not just that, I gave him full access over the domain to use as he wants to.
So open a tab in your browser, navigate to https://hiveinvite.com and refresh it once in a while if it's still the old ugly site. And then create your own Hive Invite Cards and get them out there! :)