I guess the same reason biotech stocks get halted pending fda aproval on their pipeline drugs, the sec knows that after the news is released crazy buying or selling ensues, why not the same for a small penny stock that may receive significant news that would cause the same buying frenzy. Unlikely ..yes, but you never know. Good luck to you.
Sometimes with Big Board stocks they get halted when they are about to release major news. This allows everyone to get a chance to see the news before they lift the halt and the stock resumes trading. They never do that with penny stocks, Sierra makes up crazy rumors everyday. Her blogs are meant as a giant joke. She never got one of her made up rumors right. Does everyone understand nothing Sierra ever said was going to happen actually happened. She;s the National Enquirer of stock pickers. Everything is made up to sell papers.