Is this plugin even supported anymore?
Part of the problem with Jetpack and so many other plugins is that the code is not minified for faster loading. It is easy to do and I see no reason not to have a full version of the script and .min.js and .min.css versions that the php uses by default, so that people do not have to go in and minify everything with each update. I will bump up the rating to 5 stars if the mini versions of the JS and CSS files are ever included and enqueued by default. Aside from that it seems fine.