Using a domain name you own, you can open up email using google and other companies. I had mine through google, then used my one from my domain (@idontbot.com) through passport.net to enable it with MSN. It's pretty simple, hence why there was a load of @hush.com's at one stage.
There was/is a load of @hush.com's as it sounds pretty cool but because it is a secure email. About every year there is a problem with hotmail having an exploit figured out or something and then someone always gets hacked and banned and has to repay large sums. With hushmail there is added security so this does not occur or if it does, it is your fault as you have been keylogged etc. You have to login to the email once every 3 weeks however otherwise it will close down and you have to pay to reopen it. If it is closed you can still use it for msn however.

