TA is an awfully broad base for a topic and you're request makes no real attempt to narrow things down. You want a "generalized" discussion of indicators without revealing your proprietary trading strategies. Fair enough. I can certainly understand not wanting to share that information since the more widespread that knowledge the less effective the strategy will be (typically). I do agree with the comment that TA involves more than "throwing a few indicators together". IMO it is more art than science. So I'll get things started. Trading based on chart patterns (triangles, cup & handle, Head & shoulders etc.)...valid? or invalid?
Your comments on non-linearity are timely to some research I am starting to work on. I just read a decent book on using Kernel Regression for non-linear forecasting. I am currently looking for some software that may allow me to use these concepts for modeling. The author (John Wolberg) talks about a system he is working on but it is not commercially available.
Do you have a background or interest in modeling non-linear systems? I realize that this will not be a holy grail but may lend to improved returns over the long run. I feel that it will be a few years before I can say with any surety that I have found this method to be profitable.
News 
Market Data 
Discover 
