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I was browsing the site's most downvoted questions (don't ask why, I was real bored this cold morning) when I saw this post:

http://stackoverflow.com/questions/1156363/create-a-compiler-for-windows/1156434#1156434

I was wondering why StackOverflow has a rads.stackoverflow.com, with some sort of a amzn that seems to be a shorter form for Amazon, and it takes in the ID of a book. Lastly, it redirects to the product page on Amazon.

Is that some kind of an advertisement link between Amazon and Stack Overflow? Are the links implemented automatically or posted by the author of the post? How are they implemented?

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1 Answer 1

up vote 19 down vote accepted

It's the automatic replacement of links to Amazon with SO's own referral links. See this blog post for more detail and background on how it came about.

There's also this here on meta which explains what's going on.

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ok great! I was looking for rads.stackoverflow.com and I can't find anything. Thanks! –  mauris Nov 19 '09 at 23:14

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