Also sotwe.com although you need to filter your javascript pretty heavily to use it safely.

At this point just ditch Twitter.

Sending a C&D ordering someone to stop doing a legal thing is also legal.

Civil law is not centered around what is or is not legal. It is about resolving problems that fall outside of criminal law. It is a completely different set of procedures and approach to the law.

From my understanding scraping a public website you'd otherwise have access to is legal in the US. However, re-hosting that scrapped copyright content, particularly if it isn't transformative/fair-use (inc. only partial content) is very much either violates copyright, or best case is legally a gray area.

Google got dragged into court for exactly this, and they were summarizing/snipping, so they had a fair-use argument to make. This is a 1:1 reproduction of the content, so the legal arguments on fair-use would be harder to make I suspect.

I've personally used XCancel, and I really like it, but stepping back legally they're on shaky ground if Twitter decides to stop it.

> How could anyone thing a single letter is good choice for an company/service name

In this case, Musk is stuck being his 12 year old self and carrying a 30 year old obsession to use this very cool naming. He finally got the chance.