Things that were not immediately obvious to me

I find the JS interpreter demo that the MochiKit folks put out to be quite useful. It makes it easy to do little JS experiments from any web browser. Many times, however, I’d like to import some external JS libraries that I’ve stored elsewhere on the web into that interpreter, and there doesn’t seem to be a built-in way to do that. A little googling turned up a nearly ready-made bit of code that can be copy-and-pasted into the interpreter to solve the problem.
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I’ve been looking at Amazon’s S3 service recently. S3 is a great deal for storage, but I wondered how cost-effective it is at serving content. After a little computation, the answer seems to be: “It’s not that great”.
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