What is Reddit's opinion of Ghoster?

From 3.5 billion Reddit comments

Ghoster. It's a very small utility for Windows that basically dims everything but the active window, much like the dimming effect for the UAC prompts. You can control the level of dimming you want.

Originally I sought it out because I like to play older games in their max possible resolution, but windowed, and was annoyed by all the distractions around the window. But I've actually found this tool pretty nifty for general use. I find it much easier to focus with the active window jumping out at me just a little more than the rest.