It all depends on the ISP. Mine is a small local telco and when I go to various sites I see ads that are customized for my area somehow. I imagine if you have a larger national ISP it might not be so localizable.
w/VOIP providers your phone number can be anywhere. Not a factor.
Receivers do not report whether certain TP's are seen, only if the satellite is locked.
This is good, if true. Since the SD locals I'm paying for are shown as subscribed but can't be received, I was afraid that Dish might give a "courtesy call" to fix my "problem."