Live is owned by Microsoft. It is spunoff of Hotmail: http://explore.live.com/windows-live-mail?os=other
by writing it on a paper and never losing the paper
There is Yahoo, Aol, hotmail are some of the most common ones that i have heard of
You can know it from the content of the web , if the content is not giving service for the public , it means that that web is personal web and it is operated by a perosn who is running this web site .
If you receive an email from them.