Spring is when the days are longer, cherry blossoms are in bloom, and the Rent Guidelines Board discusses this year's round of rent hikes for rent-regulated apartments. And this year's talks should be another doozy, as the RGB found landlord operating costs have risen 7.8% over the past year. This year, landlords will be asking for 10% hikes for 1-year leases and 15% increases for 2-year leases. Last year, rents hikes were approved for 3%......