How to Make Calls over Wifi and or 3g With Your Iphone, Ipod or Ipad

As of today (Dec 7, 2010) there are a couple of new ways you can make calls on your iphone without using your minutes! With these apps, you can make wifi calls or 3g calls with your iphone, ipod or ipad! I hope Mr. Jobs doesn't take them off the app store.

Viber is a free app that's basically Skype meets Google Voice. It can make regular voice calls from your iPhone, but upon calling another Viber user it'll automatically route the call over VOIP and cost you absolutely nothing. - lifehacker

Talkatone sets up free VoIP calls, over 3G or Wi-Fi, from your iPhone, iPod, or iPad through Google Voice for free. - lifehacker

Why you shouldn’t jailbreak your iPhone

So you're thinking about Jailbreaking your Iphone so you can download all the cool/usefull apps which the iTunes store doesnt allow/want you to use. You want to use a different carrier and avoid signing a contract with AT&T. You want to customize your Iphone the way you want it. Who is going to stop you? Although there are many reasons why you would want to Jailbreak your Iphone with redsn0w or whatnot, here are some reason why you shouldn't.

• - It's illegal. (meh...)
• - Bye Bye warranty (meh...)
• - If you get caught, you'll get in trouble with AT&T (if you have a contract with them).
• - The interface gets slower! sometimes when you want to pull up an app, or hit the messages icon.... it takes about 4 seconds for it to load.
• - You can't update the software on your iphone without jailbreaking it again. You have to back it up, erase everything then quickpwn it again... its just a hassle.