Windows Live team is ready to take on Gmail service one again. They rolled out Alias feature to Windows Live Hotmail worldwide. The new aliasing feature makes it easy to use a different email address and still get all the benefits of Hotmail without having to change your primary email address and online identity.
Email aliases let you create completely different email addresses that you can use to receive email into your primary account without anyone knowing what your primary email address is.
Starting today, you can add up to five aliases per year to your Hotmail account, up to fifteen aliases in total, all designed to make it a lot easier to organize different types of email and personas in one Hotmail inbox without having to give out your primary email address if you don’t want to.
Courtesy: Windows Team Blog