A college atheist group in the US has been criticised for offering students pornography in exchange for Bibles.

While Christian students at the University of Texas San Antonio campus have accused the group of peddling the pornographic material and smearing "the Word of God," the promoters of the pornography swap, Atheist Agenda, has tagged the exchange: "Smut for Smut."

When Atheist Agenda started their campaign at the university in 2005, their first bible/pornography campaign became national news and prompted debate between conservatives and college administrators.

The college has adopted a policy of free speech and assembly for followers of Atheist Agenda, as long as there is no violence.