SAN FRANSISCO MAYOR ED LEE AND SUPERVISOR MARK FARREL PROPOSED REFORMS TO THE CITY'S SHORT TERM RENTAL LAW YESTERDAY. CITY PLANNING OFFICIALS SAY THE LAW, WHICH WENT INTO EFFECT IN FEBRUARY, IS UNENFORCEABLE AND LARGLY IGNORED BY USERS OF WEB SITES LIKE AIR BNB. AIR BNB POSTS OVER 5,000 LISTINGS EVEN THOUGH ONLY 170 HOSTS HAVE REGISTERED WITH THE CITY. SAN FRANSISCO SUPERVISOR DAVID CAMPOS, WHO HAS ALREADY INTRODUCED CHANGES TO THE LEGISLATION, SAYS THAT MAYOR LEES PROPOSALS DO NOT GO FAR ENOUGH. PACIFICA'S MIKE KONE REPORTS.