About.com (formerly MiningCo.com) is an American Internet-based network of content that publishes articles and videos about various subjects on its "topic sites", of which there are nearly 1,000. It is operated by About, Inc. (formerly The Mining Company, MiningCo.com, Inc., and About.com, Inc.). The website competes with other online resource sites and encyclopedias. By March 2014, 61,428,000 unique visitors were registered by comScore for About.com, making it the 16th-most-visited online property for that month. As of August 2012, About.com is the property of IAC, owner of Ask.com and numerous other online brands, and its revenue is generated by advertising.