socvrg.js

// ==UserScript==
// @name         Stack Overflow CV Request Generator
// @namespace    http://your.homepage/
// @version      0.1
// @description  This script generates formatted close vote requests and sends them to a specified chat room
// @author       @TinyGiant
// @match        http://*.stackoverflow.com/questions/*
// @grant        GM_xmlhttpRequest
// ==/UserScript==

// Usage:
//   This script works on stackoverflow.com and meta.stackoverflow.com
//   To open the reason prompt:
//      Press ctrl+shift+a or,
//      Click [cv-pls] in the post menu
//   Enter your reason into the prompt
//      Anything that is acceptable in chat is acceptable in the reason dialog.
//   Click [OK] or press enter on your keyboard to submit the request.
//   Clicking on the [X] at the top of the dialog will cancel the request.
//   This script will send the request to the SO Close Vote Reviewers room.
//     To change this, change `room` to the id number of the room in question.
//   Requests generated by this script will follow the following format:
//     [tag:cv-pls] reason [title](url) - [user](url) time
//   For feature requests, new site requests or bug reports:
//     Send me a message in the SOCVR addressed to @TinyGiant
//     I will respond as soon as I can.

var room = '41570';

var cvButton = $('<a href="#">cv-pls</a>');
$('#question .post-menu').append(cvButton);

var cvRequest = function() {
    var reason = window.prompt('Reason for closing'); 
    if(reason !== null) { 
        var tit = '[' + $('#question-header h1 a').text() + '](' + "http://stackoverflow.com" + $('#question .short-link').attr('href') + ')';
        var result = '[tag:cv-pls] ' + reason + ' ' + tit;
        GM_xmlhttpRequest({
            method: 'GET',
            url: 'http://chat.stackoverflow.com/rooms/' + room,
            onload: function(response) {
                GM_xmlhttpRequest({
                    method: 'POST',
                    url: 'http://chat.stackoverflow.com/chats/' + room + '/messages/new',
                    headers: {'Content-Type': 'application/x-www-form-urlencoded'},
                    data: 'text=' + encodeURIComponent(result) + '&fkey=' + response.responseText.match(/hidden" value="([\dabcdef]{32})/)[1]
                });
            }
        });
    }
}

cvButton.on('click', cvRequest);
$(document).keydown(function(e) {
    if(e.ctrlKey && e.shiftKey && e.which === 65)
        cvRequest();
});

Would you like to put this script in the SOCVR repo? https://github.com/SO-Close-Vote-Reviewers/UserScripts

Yeah, don't know much about github yet though. If you want to add me / do it yourself go ahead. But then the pin will have to change.