So if I am out of the house on either WiFi or 3g then I am getting charged for the upload from Slingbox to the Internet. Which in turn I receive on my iDevice over 3g (my AT&T data usage) or WiFi from someone else's ISP connection.
But if I am at home, Ed is saying since it is the same WiFi network then there is no charge (bandwidth usage) from my ISP since it goes point to point (boy, are my devices that smart?). But I think Europa is saying something different. Slingbox is "slinging" to the Internet and I am receiving on my iPhone/iPad from WiFi, not 3g, but my WiFi is based on my connection to the Internet through my ISP.
Now, I'm a pretty smart guy (what movie was that from?), but I'm still not sure what is happening here. But, I do know that my ISP is going to screw me at every turn. And, unfortunately, due to watching a lot of old series that I have gone over 80 gb in a month and gotten clobbered with fees.