"Mr. Metal, how low do you think silver will go?"
----->Low 20's (at least) by the end of the year.
"Why?"
---->Trend following hedge funds loaded up long metals during the lengthy bull market. Gold especially is very vulnerable right now. Also, I believe bond yields can't possibly stay at such ridiculously low levels for much longer. Higher bond yields will make various debt instruments relatively more attractive next to bullion. Add in the fact that to the masses, equities now look like a 'good place to invest' due to recent stock price gains, and a shift out of metals this year seems more likely than not.
I should add that these metals short positions are more of a long-term call than a short-term trade. Today I bought illiquid December '13 gold futures puts, slippage and all (putting in bids at mid-point or a little higher, not blindly taking out offers) - so I'm basically committed to holding on for a while.