I'm reposting this from I-Hacked:
The interface is different, some of you may like it over traditional Hotmail. Another thing is the increase to 2GB for mailbox space. You can turn the Reading Pane off in options if you don't like it. It's a Passport site so make sure you aren't blocking cookies for live.com if you decide to use it. If you don't like it, you can go back to Options to opt out and return to normal Hotmail.
I did these steps several days ago and it worked. If it doesn't work anymore let me know.
It's definately OFN but I didn't see a thread here (searched for "Live").This was recently posted on Neowin but then was deleted. Any way, the thing is here: You can get a Windows Live Mail! account for free. It’s a small exploit that was discovered by someone (Post a comment If you discovered it, with proof), and It really works. (I tested it myself).
Alright, let’s start!
1) Open up Internet Explorer. MSN likes Internet Explorer, and hates Firefox. (Damn Microsoft!)
2) For this to work, you must be signed out of MSN. Go to the MSN Homepage, and double check you are signed out.
3) Copy this URL to Internet Explorer: Right Click On Here -> Copy
4) You should be redirected to another URL (Another URL to login). Sign in.
5) You should see the regular hotmail once signed in.
6) Once you see the regular hotmail, do Step #3 again. Copy the same URL above.
7) Click ‘Particpate’ on the bottom (Scroll down!) and walla!
The interface is different, some of you may like it over traditional Hotmail. Another thing is the increase to 2GB for mailbox space. You can turn the Reading Pane off in options if you don't like it. It's a Passport site so make sure you aren't blocking cookies for live.com if you decide to use it. If you don't like it, you can go back to Options to opt out and return to normal Hotmail.
I did these steps several days ago and it worked. If it doesn't work anymore let me know.