That's only true if we're comparing GPU mining to resistive heating. Both are equally efficient at converting electrical energy to heat: 100%.
The numbers don't look nearly as good when we compare GPU mining to a heat pump. Heat pumps utilize an additional, uncounted source of free energy (outdoor heat). Since we aren't counting that additional energy, the electrical efficiency of the heat pump is much greater than 100%.
They don't need the cooperation of telecom providers. They receive the same signal you send to the cell tower. Even if the signal is encrypted so they can't see what you are sending, they can identify that you are sending.
With enough receivers listening, they can identify your location to a pretty high accuracy.
Privacy policies are irrelevant here. They are picking up unique data as your phone communicates with a cell tower. You can do it with a $15 RTL-SDR receiver.
Get a hundred receivers and you can pinpoint anybody in a city.
Can I make my house buy itself for me and then "whoopsie, the house can't pay the bills, guess it will file for bankruptcy and hand me a big ol' stack of cash".
Reviews are one of the things that online storefront platforms consider in their algorithms. More reviews means their algorithm pushes my listings in front of a few more faces, and I get to make a little more money.
I don't ask for reviews myself. The people who do are trying to game their platform's algorithms.
That's only true if we're comparing GPU mining to resistive heating. Both are equally efficient at converting electrical energy to heat: 100%.
The numbers don't look nearly as good when we compare GPU mining to a heat pump. Heat pumps utilize an additional, uncounted source of free energy (outdoor heat). Since we aren't counting that additional energy, the electrical efficiency of the heat pump is much greater than 100%.