I use the term "ew" in a writing context with permission from Samantha Ling, who trademarked said term in said context in 2001, while we were at Clarion West. Ling (both Sam and Ling are first names, like many Asian Americans, she has two; at Clarion we combined them into "Samorling") used the term "ew" in crit sessions in order to give an emotional, visceral reaction to gritty or gory writing. To whit: "And when that guy cut himself open, eeeeeew!"
Then she wrote a story about aliens sucking fat out of humans and nearly everyone in the circle opened their crit with, "Sam(orling)! Ew!"
If you surf over to her site, you'll see that she keeps a blog. She also has her biblio. Her first sale was to Asimov's and received an honerable mention in The Year's Best Fantasy and Horror 2006: 19th Annual Collection. Isn't she disgusting?