* Prop bet: JP Morgan desk spinning out
* Om Malik: What Yelp and Twitter have in common
* Luke Timmerman: 5 reasons Illumina should fight Roche bid
* William Cohan: Justice can still be done in Bear Stearns case
* Morning Call: U.S. futures point lower, London falls early, European shares sink and the Nikkei slides.
* Buh-bye: Foursquare co-founder checks out
* Exit: AIG sells $500 million Blackstone stake
* Correlation or causation? Birther economics
* Josh Wolfe: The race for proton supremacy, in silicon
* Jamie Dimon on newspaper company pay: “Just damned outrageous”
* Huge public health accomplishment: India certified as polio-free
* Scott Kirsner: Myomo, maker of stroke rehab devices, is engineering its own recovery
* Infographic: How typical families would fare under each presidential candidate’s tax plan
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