I know I'm fighting an uphill battle here, and being prescriptivist, and derailing the conversation, and all that bad stuff, but could we please stop using "wiki" as an abbreviation for Wikipedia?

Wikipedia is a wiki, not the only wiki. That's why it's called Wikipedia; it's a wiki based encyclopedia. Calling it "wiki" is like calling Encyclopedia Brittanica "encyclopedia" for short. It makes no sense. Would you say "ya well, encyclopedia doesn't have a head shaving article"? No, you would say "Encyclopedia Brittanica" or "the encyclopedia" (if one was clear from context) or "my encyclopedia".