It’s such a tremendously bad idea that it’s almost bound to succeed. Microsoft has filed another patent, this one for an “advertising framework” that uses “context data” from your hard drive to show you advertisements and “apportion and credit advertising revenue” to ad suppliers in real time. Yes, Redmond wants to own the patent on the mother of all adware.

The application, filed in 2006, describes a multi-faceted, robust ad-delivering system that lives on a “user computer, whether it’s part of the OS, an application or integrated within applications.”

“Applications, tools, or utilities may use an application program interface to report context data tags such as key words or other information that may be used to target advertisements,” says the filing. “The advertising framework may host several components for receiving and processing the context data, refining the data, requesting advertisements from an advertising supplier, for receiving and forwarding advertisements to a display client for presentation, and for providing data back to the advertising supplier.”

Editors note: Are you willing to view advertising in exchange for a free operating system?

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