Apache is a free and open-source cross-platform web server software.
DoubleClick Ad Exchange is a real-time marketplace to buy and sell display advertising space.
Google AdSense is a program run by Google through which website publishers serve advertisements that are targeted to the site content and audience.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Twitter is a 'microblogging' system that allows you to send and receive short posts called tweets.
ValueCommerce is a pay-per-performance advertising affiliate marketing network.