Top social networking apps

• AIM (Free Edition) free Social networking app
• Yahoo! Messenger free Social networking app
• Skype free Social networking app
• Tweetie $2.99 Social networking app
• Loopt free Social networking app
• Pinger Phone free Social networking app
• Bump free Social networking app

Top apps

• Whiteboard: Collaborative Drawing free Productivity app
• GPS Tracker free Navigation app
• E*TRADE Mobile Pro free Finance app
• SportyPal free Health app
• iVault free Business app

Social networking apps

• 
  free

  Skype

  Skype gives you free calls and instant messages to anyone else on Skype. You can also call landlines and mobiles anywhere in the world at great rates. Skype is free to download and easy to use. Free Skype-to-Skype calls With Skype on your iPhone or iPod touch, simply sign into Skype from any WiFi zone, and call friends and family on Skype tot…

  Skype is a social networking app by Skype Software S.a.r.l., for iPhone and iPod Touch.
• 
  free

  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, g…

  Yahoo! Messenger is a social networking app by Yahoo, for iPhone and iPod Touch.
• 
  free

  Facebook

  Facebook for iPhone makes it easy to stay connected and share information with friends. Use your iPhone to start a conversation with Facebook Chat, check your friends' latest photos and status updates, look up a phone number, or upload your own mobile photos to Facebook while on the go.

  Facebook is a social networking app by Facebook, for iPhone and iPod Touch.