We continually see discussion on various conspiracy theory on the moon landings. Very much like the claim that the 2nd Law of Thermodynamics falsies the theory of Evolution, the people who make these claims are either simply proud of their ignorance, or simply won't learn (or both). This is despite the fact that there have been many explanation for the various claims made by these conspiracy theories.
One such website that has collected many of these claims and has debunked them meticulous is Clavius.org. There is a tremendous wealth of information here, and everything one can think of or has been made against the moon landings, one can find it here and see it smashed into bits. It's a great site to have in your Bookmars/Favorites because, inevitably, these "conspiracists" will pop their ugly heads again, and you'll know where to look for your ammunitions.