It seems half the Main Line is for sale, and the most talked-about digs up for grabs may be the 11-acre Old Gulph Road mansion owned by developer Craig Spencer, who also owns the downtown Ritz. … Speaking of real estate, are developer Davin Lamm (his family is behind Subaru of America in Cherry Hill) and wife Michele splitsville? And if so, who gets the snazzy house over by Osteria? … Also: What two PR glamour-pusses may be headed to court for a legal catfight? … In other big news, dumplings, this is my farewell column. For the past three years, it’s been delish dishing on Philly’s goings-on, but with Maine headed to Mount Holyoke, Edgar and I are re-loing to West Palm. But I’ll be back to visit—and I’ll be watching!