How to send anonymous email

How if you like to send anonymous email, you need to look for a disposable email address. Let image the context, you just make friends with a new friends, you want to make him or her a nice surprice by sending a anonymous mail.
You like to register to a forum and you do not want to use your real name, you want a fake mail address to register to the forum,
You want to have a throwaway email temporary email address for once time register to an special events and you do not want to use your real name /

Here are the list of  disposable e-mail services:

http://www.mailinator.com/mailinator/index.jsp
http://sneakemail.com/
http://www.jetable.org/en/index
http://e4ward.com/
http://trashmail.net/
http://www.tailflames.com/
http://www.spamgourmet.com/
http://temporaryinbox.com/
http://spambox.us/
http://www.10minutemail.com/10MinuteMail/index.html
http://www.selfdestructing.com/selfdestructing/about.asp
http://www.pookmail.com/
http://www.mailexpire.com/
http://www.bigfoot.com/ef/en/index.jsp
dodgeit.com