When I last blogged about this, my view was that .mac could be included in the purchase of every new mac by upping the price by a small amount or by lowering the charge of .mac.
The view on digg seems to be that it should be free. I’m not sure if Apple will be able to sustain this for free but a slight increase in mac price would do the trick without doubt.
On the other hand, if it did bring more people to the Mac then they would make their money from the computer sales themselves and .mac would be sustainable without a charge. Still, I think the most likely thing is a very small addition to the price of every new computer. Say $5 or something.