Advertisers will always say the most important factor is search relevancy, so a Microsoft-Yahoo venture would still have to prove it can help advertisers reach the customers they want, she says.

• 广告商最为关注的还是搜索的可靠性，所以微软同雅虎合并后，还需要用事实证明其可以帮助广告商有效搜索其潜在客户群。