Isn't that mostly a risk and marketing question? How seriously can you expect the TLD to be managed in the future and what do you want to communicate.
My own personal bias makes me a bit wary of "novelty" TLDs since you can't really know how they will be managed in the future. Would you use a banking service that has a novelty domain? Perhaps not. Would you use a piece of software that is hosted on the same TLD? Probably.
I have no idea if my own personal bias is shared by any significant portion of the internet population. Nor do I think my bias is consistent (for instance I can't really decide if ".io" is a novelty/fad TLD or not. Some days I think it is).
This is basically treating the TLD like the next buzzword, but in the end: does this have any practical effect apart from being cool in the eye of the owner? I mean I've been there and done that, but all things considered it doesn't actually seem to matter - there's still the domain as well. Though I might be missing something.
I've been falling back on .app because they're relatively affordable, there are still a lot of names left on that TLD, and I do happen to build websites which are more like PWAs or SPAs.
That's an odd comment to me. Different TLDs have different pricing, different restrictions, and so on. Giving the topic some thought isn't stupid. And .com is a pretty crowded namespace.
Country code TLDs (ccTLDs) [1] often have rules set by the country of origin. These rules vary widely, but some of them include country of residency requirements (you can't buy as a foreigner), ban on pornography, or strict adherence to religious requirements.
Popular domain hack ccTLD .ly is required to adhere to Libyan and Islamic/Sharia Law [2]
(edit because my posting is rate limited: )
There are plenty of non-ccTLDs, though, including thousands of gTLDs.
You can register a .horse domain if you want, and as far as I know, there are no restrictions on use.
Discord couldn't afford to buy discord.com, so they bought discordapp.com. They didn't think of buying discord.io or discord.app or some crap like that.
.com is obviously the preferred choice, but from my perspective these are the next best picks:
- .io for B2B, SAAS, etc. startups. Occasionally makes sense for B2C (itch.io, etc.) Seems to be falling out of fashion, though.
- .ai is the top choice for ML-based startups. These are really hot now.
- .dev for the occasional SAAS or library. Doesn't make sense B2C.
- .app if you're linking to a mobile app or have a SPA-like functionality. Not super popular, though.
AFAIK, the other TLDs seem like spam/noise. That might just be personal perception and I could be totally wrong. Am I missing anything?