The article, written by Jim Lippard for The Arizona Skeptic and posted on Free Inquiry's website, highlights some cases in which skeptics have not thoroughly researched a claim, or grossly misrepresented a creationism debate to confirm their own biases. There are other historical examples of skeptical fudging - creationists often point to Ernst Haeckel's falsified drawings of embryos, which were intended as evidence that ontogeny recapitulates phylogeny.
Dilbert creator Scott Adams, in his book God's Debris (available free online), offers a somewhat comical description of "The Skeptic's Disease" in an imagined conversation between a delivery worker and an old man who knows everything. I will reproduce the entire chapter here:
“Skeptics,” he said, “suffer from the skeptics’ disease— the problem of being right too often.”
“How’s that bad?” I asked.
“If you are proven to be right a hundred times in a row, no amount of evidence will convince you that you are mistaken in the hundred-and-first case. You will be seduced by your own apparent infallibility. Remember that all scientific experiments are performed by human beings and the results are subject to human interpretation. The human mind is a delusion generator, not a window to truth. Everyone, including skeptics, will generate delusions that match their views. That is how a normal and healthy brain works. Skeptics are not exempt from self-delusion.”
“Skeptics know that human perceptions are faulty,” I argued. “That’s why they have a scientific process and they insist on repeating experiments to see if results are consistent. Their scientific method virtually eliminates subjectivity.”
“The scientific approach also makes people think and act in groups,” he countered. “They form skeptical societies and create skeptical publications. They breathe each other’s fumes and they demonize those who do not share their scientific methods. Because skeptics’ views are at odds with the majority of the world, they become emotionally and intellectually isolated. That sort of environment is a recipe for cult thinking and behavior. Skeptics are not exempt from normal human brain functions. It is a human tendency to become what you attack. Skeptics attack irrational thinkers and in the process become irrational.”
The important distinction of skepticism is that it involves a constant refinement process that makes us aware of our weaknesses and limitations, and encourages others to point out the flaws in our arguments and demand proof. If we are good and honest skeptics, we should be eager to learn where we have gone wrong, and make admission for our mistakes. It is notable that the errors of skeptics are usually detected and publicized (as in the article linked above) by other skeptics using the tools of skepticism. The approach is not perfect, but it's the best method we've got in pursuing truth.