A8.net is an affiliate marketing network.
Affiliate B is an advertising system that allows site operators (HP, blogs, e-mail newsletters, etc.) to place advertiser advertisements on their own sites.
jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.
OpenResty is a web platform based on nginx which can run Lua scripts using its LuaJIT engine.
Twitter is a 'microblogging' system that allows you to send and receive short posts called tweets.