GOOD DAY FOR: The Apple core, as Apple CEO Steve Jobs apologized to early adopters who bought an iPhone for $599, after the price dropped $200 yesterday, a mere two months after its launch. He also offered them each $100 credit at Apple stores. (MarketWatch)

BAD DAY FOR: Helpful comparisons, as former Fed Chairman Alan Greenspan told a group of economists that the current economic volatility is nearly “identical” to how things were in the financial crises of 1987 and 1998, and probably 1837 and 1907. Investor euphoria naturally leads to bubbles, he said, and “these bubbles cannot be defused until the fever breaks.” (AP in Yahoo! Finance)