Alex Morris 11 December 2012 @matt – nailed it. “As an aside: the entire issue would be fixed easilly using current tech if we had the ability to tell browsers to not pre-fetch images. i.e., behave as browsers used to. It’s actually the browser’s “performance enhancement” which is the problem here.” This is a browser problem, if we want to get this done right – not stick a thumb in the leak, the vendors have to rethink prefetching/rendering and/or give us better means to influence that. A CSS load:none property might be nice for example. The work being done by @wilto and co is awesome – I don’t think this detracts from that, but hoping for a cleaner solution isn’t a bad thing.