I tend to be pretty mellow about things. I like talking with people, but I'm often on the quiet side, especially in groups. That's fine: I don't mind listening to others.
I'm polyamorous in the sense that my emotions don't always draw a very clear line between being close friends and being in a relationship. If I like someone enough, and get to hang out with them frequently enough, that's not so different from being in a relationship with them. I suppose I could be in a monogamous relationship as well, but besides "don't have sex with other people", I'm not entirely sure of what exactly that would mean.
I have noticed honesty - both to others and to yourself - to usually be the best policy. So many times have either I or a friend been unhappy about something, but reluctant to say it aloud. When the issue was finally brought up, it turned out to be either a misunderstanding, or something that could be resolved to make the relationship stronger. I strongly prefer the kind of company in which everyone can be honest about their feelings, and feel safe in doing so.