I think you also have to consider if Yahoo would discontinue in markets like Japan and Korea where they are stronger than Google , and support other major search engine advertising platforms for networks like Naver. …. But IMO it’s something that is affecting more us SEO as we live all the changes on our skins than the middle user of Search Engines , at least in Spain or Italy

See the article here:
SEOmoz | 8 Predictions for SEO in 2010