In cases like these, it's perfectly okay to discuss other tickers if they illustrate something relevant. So it would be appropriate to bring up EMGE. It was suspended in September 2009:
Unlike REVO, it was a Pink. As it turned out, the stock had been vigorously pumped and dumped at the time, and the SEC suspected the company had had something to do with that. Evidently the SEC was eventually persuaded that the company had played no role, sued the promoters, and sent this letter to EMGE in July 2010:
The company, which had been trading on the Greys, then went in search of a sponsoring MM. It found one. The MM submitted a Form 211 to FINRA, and EMGE began to trade once again as a Pink in February 2011:
Much more recently, in February of this year, it filed an S-1. If the S-1 is eventually deemed effective, it will become an SEC registrant. It's odd that months have passed without an amendment, though…