Only display twitter updates in batches of certain numbers. By default the minimum number of item required to show is 10, this can be changed via localStorage to, say, N, e.g. localStorage.setItem('batch.number',N)

twitterBatch.user.js

// ==UserScript==
// @name          Twitter Batch
// @namespace     http://jeffpalm.com/twitterbatch
// @description   Only display twitter updates in batches of certain numbers.
//                By default the minimum number of item required to show is
//                10, this can be changed via localStorage to, say, N, e.g.
//                localStorage.setItem('batch.number',N)
// @include       https://twitter.com
// @include       https://www.twitter.com
// @include       https://twitter.com/*
// @include       https://www.twitter.com/*
// ==/UserScript==

(function() {

    const BATCH_NUMBER_KEY = 'batch.number';
    const BATCH_NUMBER_DEFAULT = 10;

    function note(msg) {
	try {
	    console.log(msg);
	} catch (_) {}
    }

    function getBatchNumber() {
	var key = BATCH_NUMBER_KEY;
	var res = BATCH_NUMBER_DEFAULT;
	try {
	    var num = parseInt(localStorage.getItem(key));
	    if (!isNaN(num) && num > 0) res = num;
	} catch (_) {}
	return res;
    }



    function Checker() {
	this.ignoreNextChange = false;
	this.hideNumTweetsSignTries = 0;
    }

    const HIDE_NUM_TWEETS_TRIES = 5;

    Checker.prototype = {

	hideNumTweetsSign: function() {
	    var removed = false;
	    var divs = document.getElementsByTagName('DIV');
	    for (var i in divs) {
		var div = divs[i];
		if (!!div.className && div.className.match(/new-tweets-bar/)) {
		    div.parentNode.removeChild(div);
		    removed = true;
		    break;
		}
	    }
	    if (!removed) {
		if (this.hideNumTweetsSignTries-- > 0) {
		    var thiz = this;
		    setTimeout(function(){thiz.hideNumTweetsSign();},500);
		}
	    }
	},
	
	checkNumTweets: function() {
	    if (this.ignoreNextChange) {
		this.ignoreNextChange = false;
		return;
	    }
	    var title = String(document.title);
	    var total = 0;
	    var res;
	    if (res = title.match(/\(([\d,]+)\)/)) {
		total = parseInt(res[1].replace(/\D/g,''));
	    }
	    var min = getBatchNumber();
	    note('checkNumTweets: total='+total + ',min='+min);	
	    if (total == 0) return;
	    if (total < min) {
		this.ignoreNextChange = true;		    
		document.title = title.replace(/\s*\([\d,]+\)\s*/g,'');
		this.hideNumTweetsSignTries = HIDE_NUM_TWEETS_TRIES;
		this.hideNumTweetsSign();
	    }
	}
    };

    function main() {
	var titleEl = document.getElementsByTagName('title')[0];
	var docEl = document.documentElement;
	var c = new Checker();
	if (docEl && docEl.addEventListener) {
	    docEl.addEventListener('DOMSubtreeModified', function(evt) {
		var t = evt.target;
		if (t === titleEl || 
		    (t.parentNode && t.parentNode === titleEl)) {
		    c.checkNumTweets();
		}
	    }, false);
	} else {
	    document.onpropertychange = function() {
		if (window.event.propertyName == 'title') {
		    c.checkNumTweets();
		}
	    };
	}
	c.checkNumTweets();
    }

    main();
    
})();