Each week Ross Rubin contributes Switched On, a column about consumer technology.
One of the conundrums facing device makers today is how to add wireless connectivity to their products. E-readers such as the Amazon Kindle and Barnes & Noble Nook use internet access primarily for selling you more content, so it can be completely subsidized. Laptops, on the other hand, can consume large amounts of data, and so plans can run $60 per month and have capped bandwidth, even at that price. Apple and AT&T's iPad pricing scheme attempts a compromise: a $15 prepaid for a minimal 250 MB per month that could serve the needs of many users (especially with a Flash-less browser and sideloaded video delivery), along with
