Oh, that's backwards from what I thought the situation was. Thanks!
Apparently such information has to be released in a way that all the public, generally, can see it at once and twitter with it's faked high user numbers and famous people fulfills this. Releasing it on a small local poster board would be illegal because it is limited, where twitter is legal because everyone theoretically has access to twitter.
Eh not entirely true. Twitter throws up a login screen if you try to view more than a couple tweets. There’s probably an argument there since an account (and PII) is required.
The SEC's Rule FD [1].
[1] https://www.sec.gov/news/press-release/2013-2013-51htm