Bill,
Although I have spent the better part of the last 5 years long precious metals (and still have a few junior miners on the books), silver seems awfully precarious to me here. There is an increasing amount of literature (some linked by you and commenters in previous articles) about how demand created by a silver ETF would squeeze the underlying metal. This may be sufficient to get the CFTC to step in and oppose the ETF. As I'm sure everyone recalls, the CFTC has already had to step in once and take drastic measures to prevent a corner of the silver market. If, as the authors of these articles suggest, the ETF could soak up all available supply of silver, it wouldn't surprise me to see them step in again. Not a reason to short, but a reason to be careful and take partial profits imo.