FameList.js

/*
 * FameList.js
 *
 * When you see
 *    https://twitter.com/EXAMPLEUSER/...
 * Then you jump to
 *    https://twitter.com/EXAMPLEUSER/memberships
 *
 * Written by Hiroshi Yuki.
 * Licensed under CC0.
 * https://creativecommons.org/publicdomain/zero/1.0/
 *
 */

function start() {
  var url = location.href;
  var r = url.match(/^https:\/\/twitter\.com\/([^\/]+)/);
  if (r) {
    var username = r[1];
    location = 'https://twitter.com/' + username + '/memberships';
  } else {
    alert("Username is not found.");
  }
}
start();