I think my knowledge of people I've known in my life creeps into my work all the time. I think I use it as a way of understanding, and sharing what I've learned. Sometimes when I read another author's book I'll read about a situation going on with the characters and I'll just feel like I can see how it was translated from real life. I'll feel that the writer knew exactly what something felt like that they've been through or they witnessed someone go through, because they described it so perfectly.

If and only if I really like the person, they know that I write, and they have asked. All three are requirements.

pretty much every piece i've ever written is about someone i know, or about myself. it's all personal. a lot of them are about other people or how they make me feel.

Most, if not all, of my pieces are inspired by someone or something someone has done.....however, I can't recall ever setting out to write something for someone...

I guess all of it? Things that people do or say generally inspire stories or scenes in my writing... And some people I know actually become characters.