News in Short: Yahoo revamps search engine, Twitter revamps search engine

Yahoo revamps search engine
Yahoo is rolling out a new interactive search system today, with "intelligent shortcuts" and some intuitive enhancements that offer localized search results and more mediums, including Twitter feeds, event listings, and videos. Many of this features will extend to Yahoo's mobile search platform. The demo vid below has details.
Twitter revamps search engine
"Subtle" is a good word to describe New Twitter's new search function, but improvement is improvement. The "real-time information network" announced recently that they have changed the architectural way in which their search platform makes queries to their systems database.
The new functionality scales better and can index more Tweets per second, all while using less system resources. The new program is no longer using MySQL queries.