We've all seen the commercials. Mail in your unwanted and broken gold and receive cold hard cash. Yeah, I was skeptical too . But earlier today I went to the Brooklyn Marriott where Cash 4 Gold apparently takes up residence a couple times a week. I saw an ad in am NewYork and decided to try my luck with a few gold necklaces I've had since the '80s when I was 14k-with-lobster-claw-clasp-crazy. Thrown in the mix were a couple items I scored at an apartment giveaway. As I waited, I watched two women who worked for the NYPD sell their goods, so how shady could this operation be? When it was my turn, a friendly young woman with a jeweler's lens inspected my jewelry and sorted it into bins according to karat. I told her I'd been curious about Cash 4 Gold but didn't want to mail in her jewelry. She agreed making the sale in person eliminates some of the skepticism. She then mentioned a referral program where I make extra money each time a person I reco...