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. Why did Apple (AAPL) shares fall after they announced new products? -- George from Massachusetts James J. Cramer: The problem was that the products just weren't exciting enough. The iPod nano set the bar pretty high for new product introductions from Apple, and the new stuff like the HiFi just didn't meet those expectations. What do you think of variable annuities? -- Andrew from Canada James J. Cramer: I think investors have to be very careful with variable annuities. The annual fees are often very high and the sales commissions can be outrageous. Investors interested in variable annuities should very carefully research these issues, because they can be a big drag on returns. Want more Cramer? Check out Jim's rules and commandments for investing from his latest book by clicking here.