[pray4liberty]

If someone has a wi-fi server without a password protection, then I believe it is safe to assume that he is simply inviting the public to use it.

Not exactly. There's a difference between 'invitation' and 'tacit permission.' I believe leaving a network unsecured (which some do) falls into the latter category.

[P-Marlowe]

Not exactly. There's a difference between 'invitation' and 'tacit permission.' I believe leaving a network unsecured (which some do) falls into the latter category.

It is simply the tacit granting of a public easement onto the cyber-highway. We must assume that everyone who does not secure their network is simply being neighborly.