well they've stopped trading of RSX, which i am not pleased with. All the calls I had written for expiration this past friday have gone out worthless but not knowing they would stop trading I didnt take the opportunity to write call for next friday, should I have anticipated that? Maybe, b/c on closer examination, the largest components have all stopped trading on Thursday so that leaves an ETF with most of its assets not even trading. We'll have to wait this out, but it does seem that selling is allowed, but if you do sell, then who can buy, I don't get it.