Skype (Free)

The company adds video chat capabilities for the iPhone 4 and also offers instant messaging. Users can send or receive video via the iPhone 3s rear camera.

Use this app for video chats with your Google Talk buddies, as well as unlimited free phone calls and Short Message Service texts through Google Voice.

This app uses push notifications to get messages, pictures, and audio notes and video messages across several platforms of smartphones.

Tired of sending boring old text messages and emails? Spice them up with EmojiArt, and discover new ways of speaking your mind.

Have you ever shared a secret with a vast, unknown audience? Thats the aim of PostSecret, where you can read and post anonymous secrets on the Web.

Blast out your daily, hourly or by-the-minute status with the ubiquitous Twitter. Just try to have something to say.

Share photos, apps, music, messages, locations and contacts by bumping your iPhone to another, or partake in long-distance virtual bumps.

Check out this forum app that allows you to connect to thousands of Internet forums with the ability to access private messages and upload images.

Well, we had to include it, didnt we? Post status updates, send messages and otherwise share your entire life, all over again, on your iPhone.

Annoy your friends by sending them a text message that displays itself upside down. You may not use it often, but youll always know whose goat youll get.