Funny, I can't seem to find ANY anti-evolution material on there.
Then you didn't look very hard.
A great many of the "topic" pages on www.talkorigins.org contain sidebars in the upper-right corner containing links to anti-evolutionary material on the same subject, or specific rebuttals to that t.o. webpage. For example:
Plagiarized Errors and Molecular GeneticsMany other pages present anti-evolutionary arguments in all their glory (*cough*) and also present arguments and evidence which counter them (oh, the horrors). For example:29+ Evidences for Macroevolution
The Evolution of Improved Fitness
Bombardier Beetles and the Argument of DesignOther pages are straightforward descriptions of anti-evolutionary positions and/or arguments, such as:Is the Complement System Irreducibly Complex?
Thermodynamics, Evolution and Creationism
So You Want to be an Anti-Darwinian: Varieties of Opposition to DarwinismBooks and other works by anti-evolutionists are freely reviewed and not hidden under a bushel. For example:Irreducible Complexity and Michael Behe
The Coso Artifact: Mystery from the Depths of Time
Creationism and Human Evolution
Critiques of Anti-Evolutionist Phillip Johnson's ViewsThe more common anti-evolutionary arguments are all cataloged, presented, and critiqued:Review of Michael Denton's, Evolution: A Theory in Crisis
Geochronology kata John Woodmorappe
A Criticism of the ICR's Grand Canyon Dating Project
The General Anti-Creationism FAQThere are many full-text debates on the site which let anti-evolutionists speak for themselves in full. A few examples:How Good Are Those Young-Earth Arguments?
On Creation Science and the Alleged Decay of the Earth's Magnetic Field
Meteorite Dust and the Age of the Earth
A talk.origins Age of the Earth DebateThe website contains a large archive of "Feedback", or letters-to-the-editor, which contains a large number of contributions by anti-evolutionists challenging information on the site or providing "new" arguments. Similarly, there are numerous classic post exchanges from the talk.origins Usenet forum, such as Fish Fossils: Post of the Month: September 2002, which give anti-evolutionists freedom to make their points.Hugh Ross and Duane Gish Debate
Debate between Richard Milton and Jim Foley
Furthermore, alongside the full text of Darwin's On The Origin of Speciescan be found The Book of Genesis
Finally, the links page provides links to all prominent anti-evolutionary websites.
Are you sure?