This has gotten some press attention, tragically.  It seems designed to do little else.

A group of atheists at the University of Texas San Antonio have offered to give pornography to anyone who gives them a Bible,  alleging that porn isn't any worse than the 'smut' in the Bible. 

As a Christian, this seems at best laughable and sophomoric, a weak attempt to gain attention without offering any sort of intellectual or moral justification beyond nobody can stop us.

If I were an atheist, I'd be disappointed in how pathetic this effort is.  You don't like the Bible.  Gotcha.  Is this your best alternative?  Is this your best substitute?  One of the most enduring moral systems on the planet, the undergirding for most of Western Civilization morality & ethics, and your best alternative is a Playboy magazine?  Really?  Is that the best the atheist world-view has to offer?

Sophomoric, literally.  They'll get their 15 minutes of fame.  Then maybe they can get back to something more useful.  Once they figure out what that might be, I guess.