Why use alternatives? You can download the Google Web Fonts and serve them from your host. You can also download and serve Font Awesome from local. And there

Why use alternatives? You can download the Google Web Fonts and serve them from your host. You can also download and serve Font Awesome from local. And there doesn't seem to be a reason why you can't do it with gravatar either. I don't get this post honestly. It seems to be about replacing stuff with other stuff instead of replacing CDN with locally served content.