Why is internet access sometimes free?

Countries where Internet access is available to a majority of the population include Germany, India, China, Chile, Iceland, Finland, Sweden, France, Greece, Italy, Australia, Denmark, the United States, Canada, the United Kingdom, Ireland, Portugal, The Netherlands, Japan, Singapore, Taiwan, Thailand, South Korea, Philippines and Norway. The use of the Internet around the world has been growing rapidly over the last decade, although the growth rate seems to have slowed somewhat after 2000. The phase of rapid growth is ending in industrialized countries, as usage becomes ubiquitous there, but the spread continues in Africa, Latin America, the Caribbean and the Middle East. One example of a great number of people gaining access to the internet, is in Brazil, thanks to president Luís Inácio Lula da Silva (also known as Lula) lowering taxes on computers and in dial-up providers, brazilians are growing significantly on the internet in the past 2 years.