At the end of its two-year contract with Microsoft, real estate brokerage site Redfin went from a mix of Virtual Earth and Google Maps to Google Maps only. The reason? Google Maps renders pushpins a lot faster than VE, and a lot faster than it used to. “We did an evaluation and figured out a way to draw a large number of pushpins on GMaps very quickly. When we went with VE in 2006, GMaps was faster out of the box but slower once we started drawing on it, especially on IE6. … In the end, it was speed, speed, speed that convinced us to switch. In our worst case scenario of 500 pushpins on the map in IE6, GMaps is 385% faster” (emphasis mine). Via All Points Blog and Scobleizer.