Regardless of the substance of the subject matter, on a regular basis Christians get taken to task for their beliefs. If you're going to engage the individuals then you had best have half a clue as to what they believe and why they are using certain terms (e.g. depravity). The alternative is continued miscommunication. If you're happy with that then so be it. Personally I don't find it satisfactory, and tend to read up on subjects that I want to contribute to, especially if I know little about them.
Scientists require this when engaging in discussions about evolution, and rightly so. Its a shame to see this not reciprocated when folks attempt to engage in discussion (or is it merely attack) of Christian beliefs. Most of the contributions to these subjects show a woeful ignorance, demonstrating vestiges of a WTS education.
Of course there will be those who simply don't want to expend the effort, especially if they feel the topic is meaningless, and I can totally understand that. But, simply put, it cuts both ways. Ignorant (and I don't mean any of this in a pejorative sense) creationists make fools of themselves in discussions on evolution and ignorant [usually] atheists [often] make fools of themselves in discussions on beliefs.
Gyles:
An atheist thinks the lack of god limits their requirement for special god-discussing vocabulary.
I understand this. Empathy would reveal that a Creationist might feel a similar way about evolution due to missing links, etc.. My point is merely that both are ignorant starting points to enter into a discussion.