Does t-mobile charge for wifi usage?

[DienerChristi]

I just got an HTC Dream and was wondering if t-mobile charges for using the wifi. I don't have a data plan. But I have wifi at my house. I heard that they charge a per mb usage fee or something. Is this true? Or am I free to do what I want with wifi free of charge?

 

[Beto]

Free since your using your home internet

 

[GarryN]

They can't charge you for using WiFi. They can only charge you for their data (like 3g or whatever the hell t-mobile likes to call it)