Japanese e-commerce giant Rakuten has completed the acquisition of library digital content vendor OverDrive Holdings according to a report in Telecompaper, a trade news site focused on the telecom industry. Rakuten, which is also the parent company of global e-book retailer Kobo, announced the acquisition of OverDrive in March for $410 million in cash. OverDrive CEO and founder Steve Potash will continue to direct the company. OverDrive works with more 5,000 publishers and more than 30,000 libraries around the world.