It works flawlessly and so do its related plugins. So why am I decucting a star? Because to be able to customize it so it blends into my site, I needed an account at skysa.com. I've noticed that skysa.com polls the site every couple of minutes. That means I have to put something in place to determine what data is being transferred and notify our users that for the moment, we cannot determine what data is being collected. If that isn't enough to trigger my paranoia, when I looked up the domain, skysa.com, I ascertained it is an anonymous domain registration. In addition to not having a handle on what data their site is collecting from mine, I don't know who is collecting it. At this point, I'm not certain if I will keep it.
I would gladly have paid something to get a customizable bar that kept everything on my site.