From Seekingalpha.com: They are still listed. There have not been any press releases announcing closure. Trading volume has gone to zero. In some cases, the market maker has abandoned his post. These are the living dead of the ETF world - products abandoned by their sponsors, shunned by the public, or both.
It is not unusual for a relatively new ETF to go all day without any trades. In fact, 49 ETFs registered zero volume for Thursday, March 5, 2009. In case you are wondering, there are 843 ETFs and ETNs listed in the U.S., so nearly 6% of them had no trades that day….. Full Article: Source