I was totally on board with the interjection aspect of the cut. You had me at "ugh."

Very interesting stuff. I don't know how much I think about this. I don't think I write a lot of non-word words. Though in "conversational netspeak," I have been known to use, for instance, "hunh" to mean "huh, really?" "hmm, yeah" or similar. It's because I don't think that the sound I make is really "huh," but something of more definitive sounding. To me.

I do notice and lament the lack of care taken with words that I consider real words, like yea/yeah. "Yea" is pronounced "yay," "yeah" yaa (or whatever). To me, "yea" implies Robin Hood or some other attempt at antiquing fiction. I think the only context I'd use "yea" is when saying "yea or nay." This also invites the question of how much to colloquialize; Americans, for the most part, don't say "yes" when they mean "yeah." So should we write out "because"? I don't know about you, but I hardly ever keep the "be-" part.

"Eh" depends on context, and I use it both as "ehh, whatever" and "I'm not Canadian, but I sound like it, eh?"