how do you react to things like wireless that's 'available' from your living room?
Example - I bought a wireless router a year ago since I already had a wireless laptop, and figured I might as well be able to use it at home, too.
What I discovered when I plugged it in was three networks already established (using the three viable channels), leaving me with three freely available internet sources, but no opportunity to set up the router I had bought.
It wasn't that big a deal, so I just did without wireless, and a couple of months later one of the networks disappeared, so now I have wireless (lots of rental turnover in a student neighborhood).
There's an interesting parallel in the cellphone industry. Businesses theoretically have the right to block cellular signals from their premises (but not to interfere with the signal beyond those premises). SImilarly wireless has a range, and it can't be assumed that you have the right to flood your neighbors with wireless signals, especially as it might interfere with their ability to use the same technology.
What's the etiquette here - absent a bandwidth cost, I can see an argument that if your neighbor's wireless prevents you from having your own, you're kind of justified in using theirs. Not sure if I buy the argument, but it's an interesting issue.