For megafans of megastars like Madonna and Mariah Carey, obsessive collecting is an emotional, not a financial, investment. The tradition dates to ancient Rome.
In a room in his house in London, a 52-year-old spray tan artist named James Harknett has carefully arranged more than 12,500 items connected, in one way or another, to Madonna.
Along with CDs, vinyl records, store displays and magazines like Smash H... [698 chars]