Automatic 7 (A7) is a Tactical Asset Allocation trading system inspired by Mebane Faber’s and Eric Richardson’s Ivy Portfolio.
A7′s investable universe consists of the following 7 classes of ETFs:
IWM or VTI (US Stocks)
EFA(Foreign Developed Stocks)
VWO (Emerging Market Stocks)
VNQ (US Real Estate Investment Trusts “REITS”)
DBC (Commodities)
IEF (US 7-10 year Treasury Bonds)
GL D(Gold)
The basic, absolute return seeking version of A7 holds 1 to 4 of these assets based on proprietary momentum rankings, and it may use leverage (as of August 2011). A7 rotates at the close of the last trading session of each month.
“Mom and Pop” is a variant of A7; it is a somewhat more conservative version of the portfolio, which is never levered.
It is essentially attempting to maximize the portfolio’s Sortino ratio, which, to date, has meant that it allocates anywhere from 40-100% to bonds and/or cash in any given month.
Updated backtests and actual results will be posted here once enough data has been collected to provide meaningful performance statistics.
My goal with A7 is to maximize absolute returns with volatility roughly in line with the US stock market. The goal with Mom and Pop is to outperform Mr. Faber’s GTAA ETF. If A7 and Mom and Pop cannot outperform GTAA consistently, then all of my assets will be invested in GTAA and I will find a new hobby. 
My intution on GTAA is that it is a fine product, but it is perhaps too expensive and too complicated. I suspect that a small time asset manager can get better results with a simpler approach. Complication is sometimes a necessary byproduct of scale…and as I write this (July 2011), GTAA manages $180 Million USD.