not in my backyard?
in principle, the rules seem fair. I've taken a look at how Virgin (UK) sell this idea - for now:
1) it's optional (opt in, or opt out, but optional)
2) it's on a like-for-like basis, i.e. you share your wifi, you get to use the free wifi across the network
3) bandwidth NOT taken from yours, but somehow, from the "reserve" in the overall speed (in reality, it probably, somehow, does come from yours, but - for now - it's a reasonably unnoticeable percentage)
4) totally, absolutely, definitely safe, no hacking possible, ever. Nosir, we're absolutely confident about that.
Of course, they can be as confident as the bestest and confidentest organizations and business in the world - that have been hacked, but that's what they say, and really, what else would you expect them to say.
Yet, I would be be prepared to participate, because I like the out of the box thinking, and this is a good example.