Well, since the thing it is "necessary but not sufficient" for is me to be convinced you aren't tracking me, it does not. I use them as the best current alterna

Well, since the thing it is "necessary but not sufficient" for is me to be convinced you aren't tracking me, it does not. I use them as the best current alternative, but as I alluded to in my first comment, I'd be much more comfortable with them if I could give them some money.