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Next Up: Dow 10,000? Does Anyone Care?

There are many market indexes, each representing a different aspect of the market. Whether a market index is "better" or "more important" for you, it depends on your purpose and how you are making sense out of it. If you are looking for a fast rising index after the 2008 crash or a wider coverage of certain type of stocks, S&P is of course the one, not DJIA. However, as the saying goes, what goes up must come down, there may be a down side to S&P. As another saying goes, it is not the size but how you use it.