Google is celebrating its exciting and very useful product for worldwide people (usually webmasters and SEOs) Gmail. It's 5th birthday.
Gmail has started with very simple look but with very large amount of space that can be used by people for their mail accounts. Which is usually started for internal use for Google employee but has taken out and is now used by tens of millions of people around the world in 52 languages.
Read more at http://gmailblog.blogspot.com/2009/04/gmail-turns-5.html