Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Buy index mutual fund or build my own?
One thing I would add to @littleadv (buy an ETF instead of doing your own) answer would be ensure that the dividend yield matches.  Expense ratios aren't the only thing that eat you with mutual funds: the managers can hold on to a large percentage of the dividends that the stocks normally pay (for instance, if by holding onto the same stocks, you would normally receive 3% a year in dividends, but by having a mutual fund, you only receive .75%, that's an additional cost to you).  If you tried to match the DJIA on your own, you would have an advantage of receiving the dividend yields on the stocks paying dividends.  The downsides: distributing your investments to match and the costs of actual purchases.