David Karp

• Tumblr Is The Latest Platform To Launch A Co-Viewing App
• Tumblr To Roll Out Revenue Sharing Partner Program For Certain Users Later This Year

  Tumblr rolled out ads on all blogs, and will soon let users monetize -- though revenue split, timing, and eligibility are still being worked out.

  
• 'GeekOut' – Shira Lazar Rallies Up Geeks For a Cause

  Web stars came together today to launch the \'I Am A Geek\' video created by Shira Lazar which raises money for global literacy non-profit Room to Read.