SAN FRANCISCO (Reuters) - New industry data out on Tuesday showed Yahoo Inc may have started gaining share in the Web search ad market against Google Inc even as Google's share of search audience ...

This week we got our first glimpse at how well the Microsoft-Yahoo search advertising alliance is performing and while the gains are small, the numbers are at least heading in the right direction.

Google and Yahoo said the complaints were misguided because search advertising rates are set through an auction-style system. What's more, the partnership was supposed to be non-exclusive, leaving an ...

After passing the backend search engine marketing infrastructure to Microsoft Bing, Yahoo can now get down to the business of developing content sites and building a network of portals to serve up ...

Faced with a growing threat to Web marketing, Yahoo and Click Forensics are combining efforts to battle click fraud in the first partnership between a search engine and an online auditor. The ...

The partnership, which will boost Yahoo's search ad business as well as PayPal's Express Checkout, is seen as a joint defense against Google's Checkout Yahoo and eBay’s PayPal have teamed up to attach ...