Bing not meeting your needs? Don't fret, Google just pushed its Google Search app for Windows Phone 7 live in Marketplace. A move the mirrors the Bing app
availability on the Android Market. The Google Search app utilizes your location to provide local search results and features suggestions as your type and a search history to quickly repeat any previous queries. While there's no way to reassign Google Search to the dedicated search "button" on WP7 devices, you could always pin the app to the Start screen. Unfortunately, we're still not seeing it populated in the UK Marketplace (search for "Google Search") but that should be remedied anytime now.