I feel as though its usefulness has declined some possibly due to emergence of so many alternative instruments-ETFs,funds,derivatives,etc... 1- I have seen the mkt.react contra many times to "theoretical" expected behavior at extreme TRIN readings. 2-watched mkt. move counter to the trend of the TRIN. eg...sell off heavily while trin declines significantly,etc... Any one else feel the same way? Or,still feel it is useful. I don't use it in a vacuum but I did find myself not acting on valid signals by relying on its behavior too much. Same thing with the intraday put/call ratio. Any opinions,insights or suggestions? Thx. GLTA.