So Microsoft invented and implemented this, and rolled it out to their own employees, without ever putting it into a product? Seems crazy, but maybe they found

So Microsoft invented and implemented this, and rolled it out to their own employees, without ever putting it into a product? Seems crazy, but maybe they found it just wasn't a feature people wanted/needed/could understand? I hope they don't make trouble with the patents though -- I wonder if patents could be invalidated if someone makes no effort to commercialise the invention or get someone else to. It'd be very hard to measure, but it would discourage trolling and patenting too soon, and encourage innovation to actually make it to customers instead of Microsoft potentially inventing things, patenting them, not releasing them and stopping their competitors making better products.