I'm a new trader and had an idea. I'm sure I'm not the first to post this particular idea. Here goes: -If one were to take the 10 of so areas comprising the S&P 500 and find the corresponding ETF ie...Healthcare, Energy, Technology, Consumer Staples. Materials, etc, and then, once a month, simply buy and/or reallocate your capital to the top 3 performing ETF's in that sector for the previous month, it seems to me that this may actually work quite well. -It seems to me that the really strong areas tend to continue to show continuing strength or weakness. Has anyone ever tested such a system?