Sure, the iPhone is cool looking, works out a lot, and is really good at math… but it can’t do VoIP, can it? Well, yes it can — and you can, thanks to a company called Fring and a piece of ingenious software (for jailbreakers only). Using the native app, it’s now possible to place and receive calls via your WiFi connection, thus making AT&T CEOs cry like little babies. Besides doing Skype and the like, the app also lets you connect for chats via MSN Messenger, ICQ, GTalk, SIP, Twitter, AIM, and Yahoo!, which should make this an attractive package even if you don’t want to harness the raw power of IP telephony. You can get the application for free by loading up Installer with the company’s repo.