HTML5 Canvas
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Surprise Me!
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By bloid
via codinghorror.com
Published: Oct 19 2008 / 09:59

Programming Is Hard, Let's Go Shopping!
In the development of Stack Overflow, I determined early on that we'd be using Markdown for entering questions and answers in the system. Unfortunately, Markdown allows users to intermix HTML into the markup. It's part of the spec and everything. I sort of wish it wasn't, actually -- one of the great attractions of pseudo-markup languages like BBCode is that they have nothing in common with HTML and thus sanitizing the input becomes trivial.
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