There is a conponent, or was it a plugin, to expand possibilities of sidebars. Searching is your friend.
But I am that boring guy asking same old question again: are you fancing to show those social handles to mobile users too? Because all effort you put on that axel is hidden for mobiles.
BTW, if I’m remembering right that Top contributers component breaks layout in iPad — but that is worth of own topic, though. But my weak point is that those sidebars are very problematic nowadays.