Interestingly enough, AdSense revenue can make a big difference in the developing world, where a few hundred dollars per month is a substantial sum of money.

Interestingly enough, AdSense revenue can make a big difference in the developing world, where a few hundred dollars per month is a substantial sum of money.
RyanAir wants to make flying free. See also this fascinating article about the economics behind RyanAir.
An article by Levitt and Dubner, authors of the bestseller Freakonomics, on taxes and cheating.
Interestingly, many eBay users would rather pay $5 for an item plus $6 for shipping, rather than $10 with free shipping. So much for rational actors…