Editor's note: The following are questions received from listeners of "RealMoney Radio." To send Cramer a question about topics from his radio show, click here. Listen to Cramer's latest radio show by clicking here.Hey Jimmy, I own Chevron (CVX), Merrill Lynch (MER), Whole Foods (WFMI), Juniper Networks (JNPR) and Pfizer (PFE). Am I diversified? -- Kenny from Staten Island, N.Y. James J. Cramer: Kenny, you are completely and utterly diversified. You have an oil stock, a financial, a supermarket/retailer, a tech stock and a drug play. While I'm not too fond of Pfizer these days, I'll bless this portfolio. Jim, is Goldman Sachs (GS) worth betting on here? -- Jackson from Connecticut James J. Cramer: I gotta tell you, I loved working at Goldman back in the '80s, but right now my favorite brokers are Bear Stearns ( BSC) and Lehman Brothers ( LEH), which are making tons of dough in prime brokerage and bond trading. Want more Cramer? Check out Jim's rules and commandments for investing from his latest book by clicking here.