This article is part of a special 20 article report on "Metals, miners and money".

"It wasn't that long ago -- in late 2003, to be exact -- when we were bumping up against the $400 ceiling in gold; and now we've barreled through $800," says Brien Lundin, editor of The Gold Newsletter, and host and opening speaker at the recent New Orleans Investment Conference.

Although he remains cautious on the near-term outlook -- and indeed, forecasts a correction from current levels -- he suggests, "Perhaps the reasons behind gold's rally don't matter -- and we need only consider the fact that it is rallying."

From a long-term perspective, he suggests, "The very fact that gold is rallying so strongly is telling us something about the geopolitical, economic, and/or investing scene. Does gold know something we don't?"

The gold and resource investing expert suggests, "Perhaps it's telling us that global liquidity is far deeper than we can yet understand. Maybe it's telling us that the worldwide move away from the dollar as a reserve currency is accelerating behind the scenes.

"Perhaps it's indicating that economic growth in Asia will continue, and is capable of thriving without the support of Western consumer demand.... Maybe gold is foreshadowing a geopolitical blow-up.

"Perhaps the metal is whispering that the housing crunch, with peaks in adjustable rate mortgage resets coming at the end of the year, will become worse than anyone yet fears. Or perhaps that there is some still unseen derivative or other economic crisis about to erupt.