I know a page that will use up your data... use up your data...

The web can be a scary place. If you followed a link here you might want to think about bouncing here first to make sure you install the service worker. This page will download 30MB of data and fire off 438 requests without it. Eek. With the worker installed however, this page will demonstrate how you can use the new shiny ServiceWorker technology to lazy load images.