So slowly finding authors I read.

Major Sports not here yet. Yet?

Major News sources. Not really. Some of my local TV stations are just starting here.
The National News guys, not yet. They seem to be trying. NBC News has a bot. ABC local, but not national. CBS, not sure it's really them. USA Today? it looks like they are setting things up.
No Mercury News. SF Chronicle has a placeholder.

Twitter had it's problems, but it worked.