[UPDATE BELOW] It's so important to diversify your portfolio. With a police sketch of his likeness taped to brownstone stoops throughout the West Village, the fake deliveryman suspected in a string of home invasion robberies has apparently taken his act back uptown. Yesterday afternoon, a nanny entering a West 81st Street apartment with a 5-month-old boy was followed into the building by the suspect, who was carrying a pile of packages. Once inside, he brandished a knife and forced his way into the apartment.


