Notes a reader: "The Tax Man Cometh" at 211 Filbert Street and 1245 Sansome Street, two foreclosed, adjacent parcels in a choice location on the auction block for $81,000 and $49,000 in back taxes, respectively. (That's $130,000 for an opening bid at auction. For 2 parcels. In Telegraph Hill. We'll give you a moment to process that.) Our reader notes that the properties are almost "completely unbuildable." Where there's a will, there's a way, San Francisco. So get in there and bid away.