Mike Shields

Google has reached an agreement to purchase Teracent, a startup which has built a technology platform that promises to enable advertisers to adjust and customize online display ads on the fly.

Hulu is starting to show signs of why it's not easy to run a joint venture between competitors.

Mobile Internet usage is growing exponentially—undoubtedly boosted in large part by smartphones like the iPhone.

Mobile Internet usage is growing exponentially—undoubtedly boosted in large part by smartphones like the iPhone.

The Nielsen Company claims it now has the ability to garner audience data for 30,000 Web sites, up from the 3,000 or so it has recently been able to track.

Display advertising is hurting. Search should be accounting for an even larger share of the market this year as performance advertising rules the day. And online video represents a bright spot in the online ad market.

Over 60 percent of people who sign up to use Twitter do not return to using it the following month, according to new data released by Nielsen Online.

According to a new report issued by Nielsen PreView called The Video Game Handbook, Americans, as a whole, spend more time playing video games than they do watching the CW.

Although 2008 say an explosion of online worlds targeted at children, we're likely to see contraction and consolidation in 2009. It is not a market where advertising will flourish, at least in the near term.

As the early numbers pour in, the inauguration of President Barack Obama is shaping up to be a Web video event like no other. On Jan. 20 CNN.com Live served more than 18.8 million live video streams globally from 6:00 a.m.