Sharing icons are generally inelegant and a huge drain on load speed but still provide needed functionality, so I wanted to come up with a better alternative. This started off as a concept I was just going to animate for the practice (see attached gif), but I ended up putting together a CSS demo as well.
I've included the Photoshop PSD for download; hope you enjoy it!
(Thanks to @danielbruce for the beautiful Entypo icons.)