You don't seem to have distinguished flirting from ordinary social interaction. Are you certain you're using the term in the standard way?
"Ordinary" social interaction encompasses a wide range of different kinds of exchanges, most of which are not flirting (although some especially outgoing people appear to flirt all the time). Think of how many people you interact with on a daily basis in a perfunctory, business-as-usual fashion, putting out just the bare minimum of communication necessary to buy coffee, ask for directions, etc. Also think of situations in which flirtation would probably be quite inappropriate: in deep, intellectual conversations, when requesting a loan, during a job interview, and so on.
Also think of conversations that happen on this site. Pretty dour, a lot of them. About as flirtatious as margarine on Melba toast.
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.