Major Internet sites are showing a strong and growing interest in the advertising business, and traditional ad firms are starting to get worried.

Presumably, mobile ad firms owned by competing platforms will still face some restrictions.

Or, with the new 3.3.9 section, smaller ad firms can also get into the apps.

Even so, the transaction points up the growing importance of French ad firms in this country as well as worldwide.

Chevrolet and its ad firm will choose which ad idea to use themselves.

But maybe the ad firms are the ones that really know how to create the kind of entertainment that draws a crowd these days.

He'd bounced her on his knee when she was little, he said, had worked in the same ad firm as her father.

As for what the ad firm plans to do with the suffering social network, it's a mystery.

The ad firms are more eager to please than ever.

Bates offered stock to dozens of trusted executives, far more than most ad firms.