I do the same, if I understand correctly - my home wifi is open. For the same reasons. I do watch the connection regularly, and I block the MAC addresses of p

I do the same, if I understand correctly - my home wifi is open. For the same reasons. I do watch the connection regularly, and I block the MAC addresses of people that appear to be downloading large amounts of data, running torrents, etc (so far MAC blocking has been sufficient - I haven't had a persistent user switching addresses or trying to use my own).