I treat position information on radio seriously, but keep my eyes out, relying on a rough idea of where they are. Will often respond stating my position, if we're not both getting radar info.
Safetycom is now much used where I fly, but I don't go head-in to plot positions on a map.
Height and intention are often more useful. I just hope the guy on a conflicting track 2000' above me doesn't have an engine failure and radio failure.
