Moving Email Addresses in an Email

GMail allows you to easily move an email address that was placed in the wrong spot while composing an email.

In other words, lets say you placed two emails in the To: section but really needed one of those email address in the Cc: (carbon copy section). To fix this issue, all you need to do is click on the email address and drag it to the appropriate section.

Just another way Google makes things easy for us.