Okay, desperation time again. Too many zero-dollar days in a row, and now the blizzard has closed the shop for the weekend... I frequently get sales calls that start "May I speak to the person in charge of..." Should I try doing that to line up corporate work? Pick up the Yellow Pages, ring up every number, and ask for the "person in charge of employee recognition" or the "person in charge of facilities" or the "person in charge of office decor" or somesuch? Does this approach actually work?