Yammer

After dedicating the last couple years to building a secondary market system where employees at private companies like Facebook and Twitter can sell shares, New York-based SecondMarket put itself up for trade on its own exchange. Read more

Chris Nuttall

It gets harder trying to spot the next big thing, especially when you can’t see the start-ups for the upstarts among the hundreds of pitches being made at TechCrunch50 this week.

In the end, the judges of this tech jamboree of new ideas in search of funding chose RedBeacon – a local service started by former Google employees to hook up plumbers and painters with customers – as winner of the $50,000 top prize. Read more