Most non-believers I encounter in this university city have clearly only read atheist propropaganda and visited atheist websites (they will however claim they've read every scripture know)
I read that a lot, but what atheist propaganda would that be? I visit no atheist web sites. Why would I? Atheism requires no other knowledge apart from the idea that a thing shouldn't be believed unless it is adequately supported by evidence, and evidence for gods is insufficient to support belief.
It's time for Christians to recognize that their bad PR comes from them. I learned about Christianity from Christians, first by being one for about a decade, then by seeing Christianity in the news, then by participating in religious message boards like this for the past decade, where I've done an informal survey of the spectrum of Christians, Muslims, Jews, Baha'i, and secular humanists, and have developed a spectrum for each from best to worst, with relative frequencies. That is, I learn about what the Baha'i religion does for its adherents by noting their relative disposition, intelligence, and character. And then compare that to the assortment of Christians we see, and secular humanists, to get a sense of how these ideologies affect people.
If people tell you that they don't think much of Christianity, it isn't due to propaganda. Most secular humanists are skilled critical thinkers and are not susceptible to indoctrination by propaganda.
I don't care how many times somebody repeats an idea, it doesn't become mine until I am given a reason to make it mine. It's the faith-based thinker that is susceptible to indoctrination. Once one becomes accustomed to skeptical empirical thought, others cannot simply insert ideas into his head through repetition. That's for Sunday school - you know, "Jesus loves me this I know, for the Bible tells me so." Rinse, lather and repeat. What's that if not indoctrination - repetition of an unevidenced idea until it is believed? What is saying grace at mealtime but indoctrination - repetition to reinforce a belief? Critical thinking entails rejecting this kind of passive absorption of unexamined ideas.
My tradition, secular humanism, promotes academic-style teaching and learning, which is radically different and rejects that kind of thinking. The evolutionary biology professor doesn't mindlessly repeat an unsupported meme. He'll show you the evidence that Darwin had at his disposal, and what he concluded from it. It probably won't be repeated again all semester except in your textbook, and you won't be asked if you believe it - just do you remember what was taught.
Incidentally, the secular humanists have the best track record. A greater fraction of them are very well educated, trained in critical thinking skills, and seem to be tolerant, good-natured, well-meaning, upright people. I haven't encountered a homophobic one yet. I like the kind of people this ideology generates very much.
The Jews, Buddhists, Hindus, and the Baha'i all do pretty well.
Among Christians, the Catholics do the best. Among the Protestants, the fundamentalists and creationists do the worst. Just look at the white evangelicals in America. They vote for pedophiles and men who have affairs on their wives with porn stars. What should I think of that? How should I view a religion that turns out such people by the busload? Pretty poorly, I'd say, and that feeling doesn't come from any atheistic propaganda site. It comes right from Christianity.