Google introduced their version of e-mail, known as "GMail." What Google did that "wowed" everyone was that they offer 1000MB (1 whole GB) of email space, absolutely free!
Of course, Yahoo upgraded their free e-mail accounts up to 100mb and MSN will also boost up their email spaces. Great job Google.
Google GMail is still in beta but people could sign up for an account if they receive an invitation from a buddy online.