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I was the first person to vote it up, and I'll tell you why. I happen to being doing this exact thing this weekend, so I wanted to save it for later.

If you're doing a serious deployment, check out Unicorn instead: http://unicorn.bogomips.org

Basic overview of its architecture: http://github.com/blog/517-unicorn

This. I find myself using upvotes for bookmarks about as often as I do to "promote" something.