Yahoo renews vow to fight Microsoft
Yahoo showed on Monday that it intends to keep fighting Microsoft on multiple fronts, demonstrating an array of improvements in the way it presents search results and other offerings. The long-time rivals announced an alliance last month designed to keep them within sight of Google, the Internet search leader. But that deal is confined to search, and Yahoo's comments made clear the Microsoft tie-up leaves room for antagonism even there. Much of Yahoo's upgrade resembles innovations in Microsoft's recently revamped Bing search engine. But that is because the changes are immediately logical, not because of the technology deal awaiting clearance by antitrust regulators. Microsoft intends to give Yahoo the algorithm-driven list of websites mentioning user-supplied words, which has been the core of the search experience, while the companies compete on what else the user sees.