This study by Ben R. Marshall (economics professor) and Jared Cahan (Macquarie Bank, Risk Management Group) is the latest suggesting that technical analysis provides little value to traders and investors.
There is also a book on application of scientific methods to determine the true effectiveness of technical trading signals and found them useless.
What do you think of technical strategies? Unfortunately, saying "they work for me" isn't proof that they do work, it might be proof you got lucky.
Lets try not to get personal