Online coupon site Groupon just opened up a new office, in Silicon Valley, Calif. , which will also houses its latest acquisition, mobile develoment firm Mob.ly.

Addtionally, Groupon has announced its new "G" rewards program. Initially inviting 10,000 to try G, and invite four of their friends, to do so, Groupon is giving away points k

This article is locked. Please email info@aimgroup.com for more information.