Yahoo buys Right Media for $680M

After Google bought DoubleClick very recently, Yahoo must be feeling left out, and maybe behind in the chase for advertising supremacy. Hence, this deal.
Yahoo bought RightMedia, an online advertising exchange, using a combination of cash and stock for $680 million. In October 2006, it had earlier bought 20% of the company, and now plans to purchase the remaining equity.
RightMedia is an interactive advertising exchange, having more than 20,000 buyers and sellers who use its services daily. This web based exchange allows buyers and sellers to do deals regarding placement of online ads.