A weekly roundup of what we learned at Marketplace.

Plus, listen to CEO Rich Riley's 'Bad Day at Work' playlist

Slim's money will help the app, which was an early favorite for smartphone owners, grow its user base ahead of a rumored IPO.

In the latest of our occasional series of celebrities and their favorite apps, we talk to John Flansburgh, one of the leaders of They Might Be…

Shazam is the app on your phone that identifies what song you're hearing on the radio and then lets you buy it if you want. IntoNow, which launched…