Reply #74: Here's what you wrote, Zeb:

[varkam]

In 2008 there are more Christians on Earth than at any other time in history. As we learn more over the years, more and more people realize the Truth about God's Word.

Here's the definition of argumentum ad populum from Wikipedia:

An argumentum ad populum (Latin: "appeal to the people"), in logic, is a fallacious argument that concludes a proposition to be true because many or all people believe it

Here, at least, you are resorting to an appeal to the people. You're essentially offering as support for the truth of a religion the fact that it's adherents are numerous. That's textbook, my friend.

If you were merely trying to rebut the claim to which you were responding, then you should've left off the last sentence.