Should one be investing in commodities nowadays?

I’m wondering if it would be a good idea to invest in certain commodities, like wheat, sugar and things like that. But I’m uncertain. Could you guys present to me some arguments for or against it?
I mean wheat is up because of that global warming scare and the ethanol enthusiasm, but that won’t last surely? What would be set to go up?

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September 27th, 2009 at 6:11 pm
1) It’s best to be able to operate on the "long" and "short" side of the market.
2) When you find yourself being too bullish on anything, BE CAREFUL.
3) It’s always a good idea to know when you’re "wrong" with a position so you don’t have big losses.