Good morning and welcome to another edition of our early morning linkfest.  Tell us what you think.

A bunch of long-short hedge fund money is up for grabs.  (WSJ)

Beware the power of false investment benchmarks.  (the research puzzle)

Seth Klarman is hunting around in commercial real estate for opportunities.  (market folly also My Investing Notebook)

Copper and oil have diverged.  (Pragmatic Capitalism)

When it comes to muni bonds there is a difference between default and the costs of avoiding default.  (Felix Salmon also WSJ)

Another broker jumps on the free ETF trading bandwagon.  (IndexUniverse)

Comparing the valuation of Twitter and Weibo, owned by Sina (SINA).  (Breakingviews)

The StockTwits Blog Network is in effect.  (Howard Lindzon)

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