The ONLY due diligence any potential or current shareholder should do is to check EDGAR to determine the reporting status of a stock. It matters not if anyone participates on any message board on any forum because actual due diligence to the SEC sites is everyone's personal responsibility.
The second requisite due diligence is to check the SEC Suspensions and Administrative Proceedings webpages that lists thousands of SEC Suspensions and Revocation Orders for delinquent SEC Registered stocks. All researchers would observe the consequences for delinquent SEC Registered stocks. Any SEC Registered stock that is delinquent is at risk of an SEC Suspension, and the risks are exponentially greater the longer the company is delinquent.