[lubujackson]

These are two different things. Pricing in Farmville is incremental pricing, where you get incrementally more for more $. Price discrimination is charging different people different amounts, like charging people to read an article on their Kindle that they can read for free through their browser, etc. That being said, much, much, MUCH more complicating pricing is possible thanks to the Internet, and companies are just starting to explore the possibilities. A really good example (that is positive for end users) is how Steam does deep discounts and bundles all the time. As a user you grow to expect these price fluctuations for games, but most industries haven't been so affected yet.