This maybe a good time for me to continue my post about "Multicollinearity", Anyone can't read more at the following link. About the most indepth explaination I found since the original post.
Technical indicators should be arranged in categories to keep from using too many from the same category. Here is a table that categorizes the indicators available at StockCharts.com:
Money Flow Index ---------------------------------------------------------
The best way to quickly determine if an indicator is collinear with another one is to chart it. Make sure you have enough data on the chart to get a good indication. If they basically rise and fall in about the same areas, the odds are that they are collinear and you should just use one of them.