Ok, since my last post only pointed out the (IMO) flaws in someone else's work I'll put my thoughts out there.
VoteCthulu's investing guidelines (1st draft):
1) Invest in a Vanguard target fund (or 1-3 large index funds) and forget about it if at all possible. Really. The biggest threat to under-performing the market is reacting to something new you read, chasing hot investments/strategies, or second guessing yourself.
2) If you must do it yourself, I'd start with a baseline of 20% bonds, 40% US stocks, 30% international stocks (both in broad index funds), and 10% WIW (whatever I want). Then adjust the first 3 of those +/-20% based on your personal situation (a 25 y/o might what 0% bonds, a 60y/o might want 40%, etc.). Only change these allocations when your investing goals change.
3) Start with the WIW money in cash, and then do whatever you want with it. Buy some stocks on a hot tip, invest in green companies, buy some gold, tilt towards REITS or small cap, it doesn't really matter. Hopefully this is enough to keep your hands off the other 90% and let it grow.