When you send an email to multiple people, those people can see who else got that email. But if you don't want certain email addresses to be visible to others, this is how you do it in Outlook 2010 in secrecy.
Pick from 23,000 web fonts and create web-ready type systems with real content using simple visual controls. Typecast helps you create beautiful, realistic and consistence designs.
Gmail predicts which emails might be of high importance to you so it marks them as important with a yellow icon. If your inbox ends up full of so called important emails, this is how you disable this feature.