A university study by a school of journalism revealed that close to 20 times as many folks read comments sections as there are those who contribute.That is a huge, invisible audience to educate and influence. The small number of anti-science posters are generally unreachable due to rabid partisanship, being vested in polluting industries or are in other ways uneducable. They are not the audience any of us should be trying to reach. These posters do serve a useful purpose in being our "foils" as Shakespeare might say. Consider them as being tools for getting the science message across and not as people capable of being educated or influenced by solid scientific and logic based arguments.