Sorry for ranting but it is just such a waste of time to read some reviews. Software is like anything else buyer beware and do not throw a temper tantrum because you failed to research what you are buying/ downloading. I fully understand giving suggestions on possible improvements etc but to rate the app down because it was not built and tailored to meet your needs? Especially on a free app. It always amazes me that people read a developers statement about what his/her app is supposed to do and then download it expecting it to do something very different…and then write a bad review because you did not believe the developers description of his/her product? Power Nap has its place but unfortunately the power nap mode does not respond to most non apple applications once engaged. Once I installed this and set it up to prevent sleep my backups work wonderfully.
I have a backup routine set up to run in the middle of the night and prior to installing this it was always interrupted by power sleep. This program works great for me with Mountain Lion.