My major (field of study) in college/university is most likely going to be philosophy. I'm an avid reader of this blog, and as such have internalized many LW concepts and terminology, particularly relating to philosophy. In short, should I cite this site if I make use of a LW concept - learnt several years ago on here - in a paper for a philosophy class? If yes (and I'm leaning towards yes), how?

In general, if one internalizes a blog-specific idea off of the Internet and then, perhaps unintentionally, includes it in a somewhat unrelated undergraduate paper, how does one go about referencing the blog - especially if the idea came from a comment that has since disappeared and/or cannot be found?

This is so far hypothetical, but I am sure that this situation will occur at least once in the next few years.