And one other note to etailers: discount codes are not a great standalone strategy.

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And note that the Invesco fund trades at a 15.6% discount to net asset value, taking some of the sting out of its higher expenses.

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While there are certainly some high-end models, such as the new phone-tablet hybrid Samsung Galaxy Note, Android also runs on cheaper, less-advanced phones and on discount carriers instead of the handful of Apple-approved networks that the iPhone can access.

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Never mind that the Bloomberg REIT index yields a mere 4%, a discount of 0.6 percentage points to the ten-year Treasury note--and a most expressive contrast to the REIT's 8.1% yield in March 2000, which at the time was a two-point premium to the ten-year note.

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