In my experiments, I added code to show ALL the new insights, strip HTML from the body text, replace the colon with an ellipsis, and open the ThinkUp page when you click on the notification. Here's what I've got:
```javascript
                            if (typeof data.error === 'undefined') {
                                var insight;
                                var i = data.length;
                                while (i--) {
                                    insight = data[i];
                                    var icon = site_root_path + "assets/img/favicon.png",
                                    title = insight.prefix,
                                    //strip HTML and replace colon with ellipsis
                                    message = jQuery('<p>' + insight.text + '</p>').text().replace(':', '...');
                                    notification = window.webkitNotifications.createNotification(icon, title, message);
                                    notification.onclick = function(x) { window.focus(); this.cancel(); };
                                    notification.show();
                                }
                                timecheck = Math.round(+new Date()/1000);
                            }
```