If that headache plaguing you this morning led you first to a Web search and then to the conclusion that you must have a brain tumor, you may instead be suffering from cyberchondria.
This is about a Microsoft publication (in the 'journal' Microsoft Research), here, and written up in the New York Times.

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Comments
Sounds more like a hangover to me. Except for the brain tumor part.
Posted by: Ben Zvan | November 30, 2008 10:36 AM
So I don't have an ovarian cyst? Thanks for the tip.
Posted by: Romeo Vitelli | November 30, 2008 11:32 AM
It hasn't been published in any journal (or 'journal'). It's a tech report, which you can think of as the computer science equivalent of a preprint. It's probably currently under review or has been accepted for publication in an ACM journal.
I know both of these guys; they're good scientists.
Posted by: lylebot | November 30, 2008 12:57 PM
Also known as "Step Away From Teh Google" syndrome...
Posted by: OmegaMom | November 30, 2008 9:54 PM