online advertising dollars

In today's struggling economy, every dollar counts, particularly in the volatile field of online advertising. Like most of the major search engines, Yahoo has seen its advertising revenues decline, putting additional pressure on a company already rocked by leadership changes and a falling market share.

In an effort to help companies get more value for their online advertising dollars, Yahoo announced Tuesday that it is offering three new targeting tools: Search Retargeting, Enhanced Retargeting, and Enhanced Targeting.

In the battle for online advertising dollars, YouTube has been rolling out new products in recent months to grab more revenue. In its latest move, the Google-owned video site is expanding its click-to-buy program.

The feature lets visitors purchase songs and video games while watching videos on the site. Partners include Amazon and Apple's iTunes Store. YouTube initially launched the concept in the United States and the United Kingdom, but is now moving affiliate ads to Germany, Spain and the Netherlands.