Love it, have it on my 2nd monitor for doing things quickly on the side while performing primary tasks on my main monitor. When you first load it up there should be a settings icon on the dock which is easy to fiddle with, and adding icons is as simple as drag and drop. Adds a bit of time to bootup, but worth it imo. You can adjust opacity, size, what sort of effect mouse-over has etc through the settings icon so have a fiddle with it to see what you like. I only have a few benchmark apps and other things I use on a semi-regular basis so I have mine quite large to compensate.