I followed a LINK today, to try to learn something more about using appropriate language with people who are not me. I finished the article, read the comments, and ended up more confused than ever. I still don't know what to call people who aren't me. Over the last year, I've learned that the label I put on myself isn't appropriate - it has to be prefaced. So if I don't know what to call myself, how am I supposed to know what to call everyone else?
This link was specifically about gender-identity and sexuality (I think - I honestly don't even know what to call it anymore), and how using a word - the example was "tranny" - can be damaging to a person, reinforcing years of verbal or other abuse.