Hm, I guess I was insufficiently specific. I mean, uh, ordinary talking with friends? What would you call it... well, do you see what I'm intending to refer to? :P
Yeah, I see what you mean, and you may be right (depending how you relate to your friends). Even then, though, there are aspects of friendly interactions that don't carry over to more general flirtation. I'm talking about a mode of conversation you can use with friends and acquaintances and even total strangers. That requires that it stays light and friendly and brief.
Clarisse Thorn recently posted a useful article about Ethical Pick-Up Artistry, bringing up a few basic critiques of traditional PUA and suggesting a few alternatives.
A proposal to formalize thisNot the same thing, but a discussion on forming a community to practice social artistry in general has been brought up on LW before, but I'm not personally aware of anything coming out of that.