The editorial staff of LMW used to have a view of the daunting "666" atop the building that bears the famous address on Fifth Avenue. Over the last couple of weeks, the staff watched each red "6" come down to be replaced with the Citigroup's ubiquitous Citi logo. The switch is the latest in a new trend in real estate to brand buildings. A spokeswoman for Citi said, "The opportunity came up to put signage there." Maybe a "Top of the Citi" will open soon.