As an illustration of how separation, at an uncontrolled airfield, can/should work;
Last Sunday I was inbound to The Oaks, from, the West.
I announced at 5 miles (having not gone further from the airfield) 2500ft, inbound, remaining at 2500 ft, call again over the field, 3 minutes.
I immediately received a call from a pilot, to the East of the field, inbound at the same altitude, also about 3 minutes out.
The bad -
We were on a potentially collision course.
The good -
We both knew exactly where the other aircraft was (not sighted at the start).
Established verbal contact.
Moments later he had me sighted/called - I was slightly slower. Visual contact made!
Visual & verbal contact made, we were able to smoothly, without risk, avoid each other, descend to circuit height and land.
At about the same time as this aerial exchange took place, there was a third aircarft, doing circuits - never heard a transmission.
We talked about the incident - he very concerned/apologetic that he had made excessive calls. I assured him he had done very well, made just enough timely calls/information for both of use to continue with our planned safe arrival.
Seems to me, that the first rule must be "Use Your Radio" even if you haven't heard any other traffic. Too many think that once in the circuit (including taxying) everyone knows where you are & what you are doing - no need for a call or (if need be) respond to a caller
There is no comparison between the pilot having a social chat/cluttering up the frequency and a pilot doing his/her best to maintain separation.π