Rally caps are out on Wall Street. WSJ's Money & Investing editor Ken Brown tells colleague Dennis Berman second-quarter earnings has added to risk appetite and an overall positive vibe in the market. Commodities, the bond market, the credit market--all are improving faster than most expected. Still, it's not all rosy, he says. The economy is still in a tough spot--GDP contracted last quarter, the housing market is shaky, the automobile sector is in dire straits and jobs are still disappearing. Overall, though, signs do point to a recovery in the economy.