is this true, u save more energy if you keep it on than if u turn it on/off?
No, if its powered on then you are consuming power, if its sleeping then it consumes less power... I leave my kampootar running all the time for last 5 years so far no problems... Just make sure the fan/vents on the PSU and CPU are not clogged and you have a decent UPS.. Your kampootar will keep running for years....