What do browsers do with expired cookies? I know that the app won't read them in, and I'm assuming the browser wouldn't send them, but are they purged from the file system with any regularity?

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They endup @ Starbucks .. :) – Cybernate Jul 5 '11 at 19:30
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They Eat Them OMNOMNOMNOM – Laurence Burke Jul 5 '11 at 19:31
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Digital expired cookies are treated the same as physical expired cookies. The guy who resupplies the cookies takes home the expired ones, hands them out to friends and neighbors, and everyone eats them... except for that one hacker who broke into your bank account with it.. but that hardly EVER happens. – Earlz Jul 5 '11 at 19:42
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Taken From http://msdn.microsoft.com/en-us/library/aa289495(v=vs.71).aspx

If a cookie has expired, the browser does not send that particular cookie to the server with the page request; instead, the expired cookie is deleted.

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This depends upon the specific browser and also the user's personal settings. Welcome to the world of web development, where everybody is a special case. This is one of the reasons you need to test your site extensively, with multiple browsers, from different locations.

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