While in the short run this may seem possible, in the long run it is difficult. Bing relies on Facebook which only has information on how users behave online. Google on the other hand Android, which when embedded in all the devices can provide both online and offline user preference. More <a href="http://truvoipbuzz.com/2011/05/google-android-everywhere-world-domination/" rel="nofollow">http://truvoipbuzz.com/2011/05/google-android-everywhere-wor...</a>