Social Sites Don't Deliver Big Ad Gains

As Microsoft Corp. makes a $44.6 billion bet on Internet advertising with its unsolicited offer for Yahoo Inc., there are signs that some of the biggest new places where consumers are flocking on the Web -- social networking and video-sharing sites -- are yielding advertising revenue slower than some Internet companies had hoped.

The latest warning that the hottest Web properties are proving difficult to make money from came from Internet giant Google Inc. While announcing disappointing fourth-quarter earnings Thursday, Google executives said the company was having a harder time than it expected generating ad revenue on social-networking sites and ... | Read full article