Matthew wrote: "Bluetooth Marketing is good for business and as a glorious advertisement for free speech it enables any individual use a cost free network to send their chosen message to passers by without the need for a licence or a permit from the council. One guy sends out “Have a nice day” and nothing else." Robert Smith wrote: "I just want to reiterate what Matthew said. We develop our own Bluetooth marketing software in house and our main problem is getting the ads out fast enough due to the limitations of Bluetooth technology. Our customers are very egar to get the advertisements as usually it involves them getting something for nothing." These arguments are just as true if you replace the word "Bluetooth" with "E-Mail".