What phone card should I get to call from China to US?

[gwlam12]

I have no idea how these work internationally. Some of them mention call back and I don't know what that means either. Anyone here have any words to educate me with? Thanks.


EDIT: Okay, callback is when they call me back and then I can make the call so that I don't get charged for local phone calls.

currently looking at this one

 

[zimu]

i suggest skype, www.skype.com. $0.02/minute to the US. or get a skypein number for 30 euros a year and get a US phone number with free incoming calls.