looks like not a PTSC issue..
The reason isn’t that these companies have failed to meet certain quality standards or are delinquent in their reporting to the SEC. Quite the opposite – the OTCQB is a new market (launched in April 2010) for OTC-traded companies that are registered and current in their reporting obligations to the SEC, so a move from the BB to the QB by no means signals delinquency or lower reporting quality.
http://seekingalpha.com/instablog/478544-redchip/142980-otcbb-delistings-and-rule-15c2-11-what-happened