Pingdom’s Real User Monitoring bookmarklet displays the performance of any site

With Pingdom’s Real User Monitoring (RUM) service, you can know exactly how your visitors experience your website. It gives you insight into your website’s performance and helps you answer questions like, how does your website really perform from a specific country, device, or web browser.
Today we’re releasing a simple tool with which you can display the real user performance of any website, not just the ones you monitor. Think of it as a sample of what the full Real User Monitoring service can do.
The Real User Monitoring bookmarklet is free and easy to install. Here’s what it does and how to get started.