Reuters UKReport: Amazon building ad system to compete with Google'sPCWorldAmazon plans to expand its small online ad delivery business enough to take on Google's AdWords, according to a Wall Street Journal report. The company is developing a platform for delivering ads both on its own properties and other sites, potentially ...Amazon plans to take on Google's online ad businessFortuneAmazon developing own online advertising software: WSJReutersall 10 news articles »