RailsonWave.com summarizes the recent talk at RailsConf 2008 regarding YellowPages.com’s move from Java to Rails. They serve up 23 million visitors a month. The conversion resulted in 20,000 lines of Ruby code instead of 125,000 lines of Java code, and most importantly eased the difficulty they had in maintaining it. Once complete, and optimized their site is now faster than before. They also completed the rewrite in three months with four developers. You can read the entire write up at railsonwave.com.