PLT OF AN AERO COMMANDER; 690; AC6T; LANDED ON AN INTERSECTING RWY OF AN ACFT TAKING OFF AT A NON TWR ARPT; EVEN THOUGH THE RPTR ANNOUNCED HIMSELF OVER UNICOM DURING EACH TFC PATTERN PROC. THE OTHER ACFT DID NOT SEEM TO HEAR THE RPTR.

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FSS ON FIELD ADVISED ACTIVE RWY 28 (WE CALLED 15 MI SW). MONITORING CTAF WE HEARD TFC IN THE PATTERN; ANNOUNCED OURSELVES AGAIN AT 5 MI SW AND UPON ENTERING L DOWNWIND RWY 28. PICKED UP TFC VISUALLY; FOLLOWED HIM TO RWY 28. HE LANDS; TURNS OFF AND AS WE'RE ON 1/2 MI FINAL (WE ALSO CALLED 'TURNING L BASE TO FINAL RWY 28; MILLVILLE'). WE HEAR (WHAT WE ASSUMED WAS THE SOLITARY ACFT IN THE RUN-UP BLOCK SAY): '(ACFT TAIL NUMBER) DEPARTING RWY 28 AT MILLVILLE.' I SAID ALOUD; THOUGH WITHOUT KEYING THE MIKE; 'YOU MAY WANT TO RETHINK THAT; SLICK.' HE WAS IN A POS SUCH THAT ALL HE HAD TO DO WAS GLANCE OUT HIS WINDSHIELD AND HE WOULD HAVE SEEN ALL 4 OF OUR LNDG LIGHTS. SINCE HE DIDN'T MOVE TOWARD THE RWY; I SILENTLY REAFFIRMED MY BELIEF THAT LNDG LIGHTS ARE ALWAYS A GOOD IDEA; LANDED AND SAID; 'LOOK AT THAT;' AS THE CESSNA POPPED INTO VIEW FROM BEHIND A ROW OF TREES AS HE DEPARTED RWY 32. (THOSE TREES DON'T SHOW ON THE APCH PLATE; BUT I BELIEVE THEY MUST OBSCURE THE 2 RWY TOUCHDOWN ZONES FROM EACH OTHER.) THE CESSNA CALLED MILLVILLE FSS TO RPT OFF THE GND AND I CASUALLY ASKED HIM WHICH RWY. HE STILL SAID RWY 28; SO I SAID 'NO-O-O; WE JUST LANDED ON RWY 28; YOU DEPARTED RWY 32 AND WE ALMOST HIT YOU;' WHICH WAS A SLIGHT EXAGGERATION; BUT HE NEEDED SOME FOOD FOR THOUGHT. I HAVE CHEWED MY OWN 'THOUGHT FOOD' MANY TIMES SINCE THEN AND HAVE DECIDED THAT THEY ARE STILL CALLED UNCTLED FIELDS FOR THE BEST OF ALL POSSIBLE REASONS.