1.Billboard magazine launched a new weekly top-50 chart listing the most active artists on social networking sites. Rihanna, Justin Bieber and Eminem top this week's "Social 50." [Billboard]

2. The world's top ten cheap local fast food items. [Gadling]

3. A Japanese robot that can detect and pick ripened strawberries won the 4th Annual Robot of the Year Awards.

4. Congress passed a bill called the Calm Act that will force advertisers to lower the volume of television adds. Dear President Obama: SIGN IT NOW! [LA Times]

5. Old-school rapper Doug E. Fresh ("La Di Da Di") is hosting a book signing for NY1's Cheryl Wills at his Harlem restaurant Doug E.'s Fried Chicken & Waffles (132nd Street and Adam Clayton Powell Blvd. tonight, December 6, 6 to 9 p.m.

6. A Chinese copy of the Venus de Milo statue made from panda dung sold  to a Swiss man for $45,000. [Telegraph]

7. Famous skylines from old computers. [BuzzFeed]