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Abundance of Cash - What should I do?
People have asked a lot of good questions about your broader situation, tolerance for risk, etc, but I'm going to say the one-size-fits-most answer is: split some of your monthly savings (half?) into the VEU Vanguard FTSE All-World ex-US ETF and some into VTI Vanguard Total Stock Market ETF. This can be as automatic and hassle-free as the money market deposit and gives a possibility of getting a better return, with low costs and low avoidable risk.