I'd say that almost everyone, if not everyone, tends to stick to sources that they find to be reliable. I think we could agree that not everyone's sources -are- reliable- if they were, I doubt that we'd have the heated disagreements that we have in this forum.
I think the key to constructive debates is to try to understand why we disagree with each other. A lot of time, that involves delving into each other's sources of information and from there, making arguments as to why those sources are biased and/or authorative.
As a sidenote, I've referred to a -lot- more than 3 articles. A clue is that almost all of my threads start with a different article, and I've posted a fair amount of threads in my time here.