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[–] PuttItOut 0 points 1 point (+1|-0) ago 

It probably was simple in Digg because the username wasn't a key but an attribute. I believe the user name is a key in this dataset which is why it is a problem. It will also have indexing/re-indexing costs if changed.

[–] [deleted] 0 points 2 points (+2|-0) ago 

[Deleted]

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[–] AnotherCuriousRedditor [S] ago  (edited ago)

Are you suggesting that all your past posts and comments should carry your new username

Yes.

So, if my old username was "user1", it would point to http://whoaverse.com/user/user1

AND if I change it to "user2", it would point to http://whoaverse.com/user/user2. with all the comments/submissions etc that I made as user2 still intact..just that my profile would now point to http://whoaverse.com/user/user2

I'm no programmer and I don't even know the load of work that would go behind it, it'd be a cool feature to have. BTW, I've seen this feature request quite a number of times.

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[–] Atko 0 points 5 points (+5|-0) ago 

This action would have a big cascade effect on all your previous actions: private messages, voting, submissions, comments, users who follow you, your settings and subscriptions etc. A rather costly operation on a large dataset and prone to abuse. Allowing such change once per month should be doable, but there are still other aspects like user mentions notifications that would suffer. Not a priority at the time being, but it is a "nice to have" feature.