“I have been the browser history of my website visitors for the past few months to gracefully enhance adding my Atom feed to their favorite feed reader. Easily recognized branding such as “Add to My Yahoo” has yielded much higher conversion rates than a simple Atom link with a minimal effect on page load performance. Dynamically checking for active usage of 50 or so aggregators allows me to extend my total test list and promote an obscure tool that might never make the cut for permanent on-screen real estate.”