Google's on a bit of a shopping spree this holiday season. The search giant just acquired AdMob for $750 million a few weeks ago. Today, Google has acquired display advertising company Teracent for an undisclosed amount of money. The deal is expected to close this quarter. Teracent’s Intelligent Display Advertising technology creates display ads entirely customized to the specific consumer and site. The startup's proprietary alogirthims automatically pick the creative parts of a display ad (images, colors, text) in real-time determined by like geographic location, language, the content of the website, the time of day or the past performance of different ads.