Simple test located at http://clauswitt.github.com/testTickerWidget.html

TwitterTickerWidget.js

dojo.provide('com.clauswitt.TwitterTickerWidget');
dojo.require("dijit._Widget");
dojo.require("dijit._Templated");
dojo.require("dojo.io.script");

dojo.declare("com.clauswitt.TwitterTickerWidget", [dijit._Widget, dijit._Templated], {
    templateString: "<div>${name}Widget</div>",
    tweeter: 'clauswitt',
    tweetCount: 3,
    tweetSearchUrl: 'http://search.twitter.com/search.json',
    preamble: function() {

    },
    postCreate : function() {
        this.__fetchTweets();
    },
    constructor: function() {

    },
    postMixInProperties: function() {

    },
    __fetchTweets: function() {
        var callBack = dojo.hitch(this, this.__tweetCallBack);
        dojo.io.script.get({
            callbackParamName: 'callback',
            url: this.tweetSearchUrl + '?q=from:' + this.tweeter + '&rpp=' + this.tweetCount,
            handleAs: "json",
            load: callBack,
            error: function(err) {
                if (err.dojoType == 'timeout') {

                    return;
                }
                if (err.dojoType == 'cancel') {
                    return;
                }
            }
        });
    },
    __tweetCallBack: function(data) {
        tweets = this.__buildTweetList(data.results);
        dojo.empty(this.domNode);
        dojo.place(tweets, this.domNode);

    },
    __buildTweet: function(singleNode) {
        var tweet = dojo.create('div', {'class':'singleTweet'});
        var tweeterImg = dojo.create('img', {'src': singleNode['profile_image_url'], 'class': 'tweeterImage'});
        var tweetText = dojo.create('div', {'innerHTML': this.__autolink(singleNode['text']), 'class': 'tweetText'});
        var tweeterName = dojo.create('span', {'innerHTML': singleNode['from_user']});
        var tweetetAt = dojo.create('span', {'innerHTML': singleNode['created_at'], 'class': 'tweetTime'});
        dojo.place(tweeterImg, tweet);
        dojo.place(tweetText, tweet);
        dojo.place(tweeterName, tweet);
        dojo.place(tweetetAt, tweet);
        return tweet;
    },
    __buildTweetList: function(nodes) {
        var tweets = dojo.create('div', {'class': 'tweetList'});
        var that = this;
        nodes.forEach(function(item) {
            dojo.place(that.__buildTweet(item), tweets);
        });
        return tweets;
    },
    __autolink: function(s) {
        var hlink = /\s(ht|f)tp:\/\/([^ \,\;\:\!\)\(\"\'\<\>\f\n\r\t\v])+/g;
        return (s.replace(hlink, function ($0, $1, $2) {
            s = $0.substring(1, $0.length);
            // remove trailing dots, if any
            while (s.length > 0 && s.charAt(s.length - 1) == '.')
                s = s.substring(0, s.length - 1);
            // add hlink
            return " " + s.link(s);
        }));
    }
});