district m is a full-service advertising exchange that creates open, transparent marketplaces through which publishers and advertisers can quickly and easily connect to maximize today's digital advertising demand
The OpenSSL Project is a collaborative effort to develop a robust, commercial-grade, full-featured, and Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols as well as a full-strength general purpose cryptography library.
Open graph description entity tag
The Open Graph protocol enables any web page to become a rich object in a social graph, a open protocol supported by Facebook
Sites who has this tag are verfied by google to use WebMaster tools
Indicates that the site provides an interface specifically for searching the document and its related resources.