Interestingly, i have been in another stock that is a pinksheet that updates shareholders via twitter. Then they PR sometimes to the rest of the world. But it all depends on the type of info that needs to be PR'd. So Pinkies might have different rules. JMO!!
here is your answer: Alternative Methods of Public Disclosure
We are recognizing alternative methods of public disclosure to give issuers the flexibility to choose another method (or a combination of methods) of disclosure that will achieve the goal of effecting broad, non-exclusionary distribution of information to the public.69
As a general matter, acceptable methods of public disclosure for purposes of Regulation FD will include press releases distributed through a widely circulated news or wire service, or announcements made through press conferences or conference calls that interested members of the public may attend or listen to either in person, by telephonic transmission, or by other electronic transmission (including use of the Internet). The public must be given adequate notice of the conference or call and the means for accessing it.