The Goldman Sachs-DST investment of $500 million in Facebook and the Goldman-managed sale of $1.5 billion of the company’s stock was not the end of its long-running efforts to reward its employees — and control the stock they have earned in the company.

Roger Nichols died the other day.

As I sit here writing this post, I am on board an American Airlines flight from Chicago to New York City. I consider it a minor miracle that the plane is actually in the air. After two cancelled flights on this trip alone, a seat without a cushion, and some trouble counting the number of people on the plane which made us return to the gate a second time after another minor problem, I’ve lost count of how many errors American Airlines has now made in this comedy that is my travels

Editor’s Note: This is a guest post by Mark Suster ( @msuster ) a VC at  GRP Partners .

This time last week, I wrote about my backstage tour of Cirque Du Soleil’s KÀ, at the MGM Grand. I also promised to go back and talk to the show’s technical director, Erik Walstad for TechCrunch TV.

As we wrote earlier this year, OneRiot launched a social targeting service for mobile ads, that offers highly targeted ads within mobile apps. Similar to Klout’s social influence score, OneRiot has developed a “social interest score” to define mobile audience segments based on social interest categories

This is a guest post from Ali Partovi , angel investor, startup advisor and serial entrepreneur.

Editor’s note : This post is co-authored by guest contributors Jon Bischke and Semil Shah . Bischke founded eduFire and RG Labs and is an advisor to Altius Education and Udemy . Shah is an entrepreneur interested in digital media, consumer Internet, and social networks.

If you’re an early stage venture capitalist or angel investor there is no time like the present to declare a bubble , say valuations are out of control and predict the demise of the tech industry in the very near future.

All week long we’ve been running clips from the Founder Stories interview with the GroupMe Guys, co-founders Jared Hecht and Steve Martocci.