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.
Lightbox is small javascript library used to overlay images on top of the current page.
OpenResty is a web platform based on nginx which can run Lua scripts using its LuaJIT engine.
Prototype is a JavaScript Framework that aims to ease development of web applications.
Twitter is a 'microblogging' system that allows you to send and receive short posts called tweets.