Originally Posted by TheNorm

Well, if you insist on citing the OED, lets have a closer look:

Deceit: The action or practice of deceiving; concealment of the truth in order to mislead; deception, fraud, cheating, false dealing.

How is "checking emails on an unsecured wireless network" deceitful? Is the truth being concealed? Is anyone being misled? Who is being cheated? Will VM charge them anything on top of the monthly fee?

The example of the car is flawed because to gain access I would have to enter my neighbours property (their car). A more apt analogy would be me reading the newspaper at night by the light of my neighbour's external halogen lamp, the energy of which happens to be overspilling onto my property.