Yahoo! Messenger...Friends are an instant away on Yahoo! Messenger for the iPhone Yahoo! Messenger for the iPhone allows you to IM friends and family right from your iPhone wherever you are.

Connect with all your friends: Instant message with your Yahoo! Messenger contacts wherever you are.

Show off and Stay in control: Show yourself as available or busy, go invisible, or show off your status and let your friends know what you're up to.

Share away: Share photos, emoticons and links, right from your iPhone.