Yahoo! Messenger for iPhone application lets you stay in touch with friends through your iPhone or iPod Touch. Here’re the top features: Send Instant text message, including emoticons and web links; Photo sharing; Sign in as invisible, or change your status to invisible; Add a custom status message. You can also include a web link with it; Recent conversations archive: Under Messages, tap a contact and you’ll see your most recent conversation. You can type in a message from there to start chatting again; Special idle state will keep you signed in but change your status to idle; if leave the app for some reason.

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