Very easy to use and set up. Great options for customization. Nice looking buttons packaged with it. I've tried quite a few sharing/like button plug ins, and this one was the easiest to use, worked right out of the box
The only gripe I have is that the share dialog's open in a new tab, rather than an iframe or some other type of dialog box that appears without the need for a page load. This is pretty minor, but can be a nuisance for users, and deter them from sharing your content.
Overall though, great plug-in, I highly recommend.