Bollinger bands represent a pretty hopeful tool in that it provides information about market dynamics (volatility) in ways that can be very useful. If you think about it, the tool allows you to read off five separate lines what some may view as so-called support and resistance levels in much the same way as you read the regular pit trader pivots. But it dynamically adjusts these levels in line with market action, and scales to any time frame of your choice. So it is pretty versatile in that sense. BUT BE WARNED THAT THE STANDARD TOOL PROVIDED IN THE USUAL MT4 INDICATOR BANK, EMPLOYS THE WRONG FORMULA AND IS COMPLETELY FLAWED FOR GIVING ACCURATE VOLATILITY READINGS. Therefore, if you want the accurate (correctly formulated) tool, look for what is called Better Bollinger Bands via google. That is the correct tool and it WILL certainly improve your readings of market action by yards insofar as volatility measure is concerned. The standard Bollinger Bands is very misleading and one wonders why metaquotes has not removed such an incorrect rendition of John Bollinger's idea for the properly calculated BBB tool. A word is enough for the wise.