The WiFi hotspot feature was native to Froyo, although several US phone companies disabled it. My TMobile MyTouch 4G has this feature and the edge can utilize it; however, there are rumors that TMobile plans to add a 14.99 plan to existing plans to allow its use. So far nothing, but who knows. A forum poster says "T-Mobile seems to be checking the http user-agent that your web browser sends with every page request to determine if it's your phone or a tethered device using the data." Not sure if thats true or even how that would work given that the edge identifies itself as an Android phone; I imagine the new Samsung Tab does too. But for now it works and does not cost extra.