On2

The search giant is poised to make its largest deal ever -- the $6 billion acquisition of online coupon site Groupon, according to several sources.

Why would Google (GOOG) would want to buy On2 Technologies (ONT)? To give it a chance to leapfrog Microsoft's Windows Media player and Adobe's Flash Player. The companies announced Wednesday that Google would buy On2 for $106.5 million in stock. Since On2's video compression technology is two...