Bitcoin to Beanie Babies userscript

BeanieBabies.user.js

// ==UserScript==
// @name Bitcoin to Beanie Babies
// @namespace beaniebabies
// @description Replaces "bitcoin" with "beanie babies"
// @include *
// @version 1.0.2
// @grant none
// ==/UserScript==

// Based on Cloud to Butt userscript:
//   https://gist.github.com/kalmanolah/5764435/raw/e2f78a6ced8bac19d0465580b3c6e83261d3da6d/cloudtobutt.user.js

(function() {

    function walk(node)
    {
        // I stole this function from here:
        // http://is.gd/mwZp7E

        var child, next;

        if (!node) return;

        switch ( node.nodeType )
        {
            case 1:  // Element
            case 9:  // Document
            case 11: // Document fragment
                child = node.firstChild;
                while ( child )
                {
                    next = child.nextSibling;
                    walk(child);
                    child = next;
                }
                break;

            case 3: // Text node
                handleText(node);
                break;
        }
    }

    function handleText(textNode)
    {
        var v = textNode.nodeValue;

        v = v.replace(/\b(BTC|ETH|LTC|BCH)\b/gi, "Beanie Babies");
        v = v.replace(/(bit|alt|shit)coins?/gi, "Beanie Babies");
        v = v.replace(/\b(digital|virtual) currenc(y|ies)\b/gi, "Beanie Babies");
        v = v.replace(/\b(digital |virtual |crypto\s?)assets?\b/gi, "Beanie Babies");
        v = v.replace(/\bblockchain\b/gi, "Beanie Babies");
        v = v.replace(/ethereum/gi, "Beanie Babies");
        v = v.replace(/litecoin/gi, "Beanie Babies");
        v = v.replace(/\bcrypto(currenc(y|ies)|coins?|s)?\b/gi, "Beanie Babies");
        v = v.replace(/\bBeanie Babies(([,;]\s*(and|or|with))\s*(Beanie Babies|\(Beanie Babies\)))+/gi, "Beanie Babies");
        v = v.replace(/\bBeanie Babies('s)?(\s+\(?Beanie Babies\)?)+/gi, "Beanie Babies");
        v = v.replace(/\bBeanie Babies is/gi, "Beanie Babies are");
        textNode.nodeValue = v;
    }

    function run()
    {
        walk(document.getElementsByTagName('body')[0]);
        walk(document.getElementsByTagName('title')[0]);
    }

    run();
    setTimeout(run, 80);
    setTimeout(run, 120);
    setTimeout(run, 320);
    setTimeout(run, 700);
    setInterval(run, 5000);
}());