Below is a list of domains that should be represented as a different domain. For example, fbcdn.net is actually facebook.com. googlevideo.com is actually where the streaming content of videos on youtube.com comes from.
Below is a list of Junk URLs that you would like cleaned from your reports. This includes social sharing widgets (facebook like buttons, tweet buttons etc), site tracking widgets (google-analytics, mixpanel etc), advertising and other common junk that web browsers access when loading web pages.