Social Launcher could show the url list of same person's social sites.

social-launcher.js

CmdUtils.CreateCommand({
  name: "social-launcher",
  description: "Show the list of same person's social sites.",
  icon: "http://yoshimov.com/favicon.ico",
  homepage: "http://yoshimov.com/?page=Social+Launcher",
  author: { name: "Yoshimov", email: "yoshimov@pobox.com"},

  preview: "Show the list of same person's social sites.",

  execute: function(){
    var d = Application.activeWindow.activeTab.document;
    var s = d.createElement('script');
    s.type='text/javascript';
    s.src='http://service.yoshimov.com/slauncher/slauncher.js';
    d.body.appendChild(s);
  }
});