Blogger is a blog-publishing service that allows multi-user blogs with time-stamped entries.
Google AdSense is a program run by Google through which website publishers serve advertisements that are targeted to the site content and audience.
Open Graph is a protocol that is used to integrate any web page into the social graph.
OpenGSE is a test suite used for testing servlet compliance. It is deployed by using WAR files that are deployed on the server engine.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.