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What's a permalink used for?
Privacy leak in permalink?

If you right click/copy "link", your user id is appended at the end of every link you create.

e.g. http://stackoverflow.com/a/271517/111307

I am 111307, and I have nothing to do with the question linked here or its answer, of course.

I am not hyper concerned about privacy, but why? What's the point of this?

I'm assuming this is some kind of way to figure out which users are bringing traffic. Are we going to get rep for this or something?

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marked as duplicate by Cody Gray, lunboks, John, animuson, Jeremy Banks Apr 11 '12 at 3:15

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2 Answers 2

up vote 5 down vote accepted

This is indeed for tracking purposes.

You don't get rep for it, but three publicity badges: Announcer, Booster, and Publicist for linking 25, 300, and 1000 people to a question.

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Great answer to the question –  bobobobo Apr 11 '12 at 17:20

Yep, you guessed it. It's for determining who gets badges like these:

enter image description here

(I think that's the only use)

You can remove the userid, though, and it'll work fine.

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Yes, almost the only use: on Ask Different one could even get an iPad for it! –  Arjan Apr 11 '12 at 5:52

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