Is this plugin being supported? Even the author is showing as "none".
I know this seems a little cheeky, but can I suggest that you look at my equivalent plugin - Simple Social Bookmarks. It does much the same thing, but I'm continuing to develop and support it.
I'm currently working on a major change as well (read more about it here), so if there's anything that this plugin did that you'd like mine to, let me know.