qacwac,
Trying to spread the word and win people is good. HOWEVER, I think you should pause for a while and think about the approach.
I can tell you from experience that "fist pounding" "this is the absolute..." bla bla doesn't accomplish anything but get people up in arms at you.
You'll never be able to do something like "I know this person has the wrong views, I'm going to pound the truth at him/her until they get it!"
It doesn't work that way. If you have a message you want to get across to people, speak it and go on. If someone argues with it, let them be and go on.
All you can hope for is someone to "ask you questions" about your comments. People that flame you, oppose you... and that's what you want to avoid.
Atheist probably feel the same way.
I noticed in the thread that was titled "Atheist, check this site out" a lot of Atheist bashing.
Not a good thing. They are entitled to their oppinions just as well as Christians are. Whether you agree or disagree is one thing, but saying "that's wrong" (even if you know it is) should be avoided.
What I suggest, if you see something you disagree with, instead of telling that person "they are wrong"... offer "your point of view" on the take, and possibly an alernative.