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Update: This has been rolled out to all sites in the network.

Behind the scenes we've been hard at work making some changes to how we track reputation. Here are some of the issues we're aiming to address with these changes:

  • Reputation Skew (your actual reputation doesn't match what's shown)
  • Up/Down votes oddities (mostly with the daily rep cap, the magical +2)
  • Historical Deletes (not impacting rep immediately, contributing to skew)
  • Unaccepts (display issues in the profile)
  • User Deletion (magically missing rep, another skew contributor)

To be clear: reputation values are not changing, every action in the system is still worth the same amount. Here’s what will be different:

  • Your reputation will be correct at all times
  • Deletions will have a much more immediate effect on reputation, not waiting on a recalc (but reputation sync takes up to 5 minutes on a delete/undelete action; as to not block the user's response thread, it's offloaded to a background queue)
  • Recalcs will no longer be necessary
  • Up/Down vote reversals will restore the correct reputation amount
  • Up/Down vote reversals will correctly adjust to the reputation cap
  • The reputation history in your profile will be more detailed and accurate (e.g. when a post is deleted, you'll see that in the reputation tab of your profile)

This means your reputation will go up and down more than it has previously, but it will be in sync. To think of it more easily: imagine that a recalc will be done after every action in the system.

Probably the biggest impact many will be concerned with is that you may see your reputation drop in cases where it didn't seem like it did before This was effectively happening before, but the results of that change were not applied immediately, but on the next rep recalc. Post deletion is the biggest factor here, previously it didn't (immediately) account for the reputation impact...that will no longer be the case. Reputation changes from the deletion will now be applied within the hour, and most other changes will be instant.

Now the part that will make everyone throw vegetables our way: this will require a global recalc to get everything in sync. We'll be rolling it out first here on meta, then the rest of the network...the enabling of the detailed rep view and global recalc on each individual site will coincide. During the rollout you will see empty reptuation tabs on profiles as we transition to the new storage behind the scenes, they'll be restored as the recalc rolls though each user. We’ll put up a blog post on before the network-wide rollout.

If you have any questions about this change or details I may have left out, please do so in answers below so that we can clear up as much as possible before this rolls out.

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Here's a feature request waiting for a (now) easy answer:… – lockstep Feb 23 '12 at 22:53
My Rep! My ill-gotten rep! NOOOOOOOOOOOOOOOOOO! – Shog9 Feb 23 '12 at 22:58
Now I'm going to have to spend all night bidding a tearful goodbye to each of those 538 points that you're senselessly slaughtering. You monster. – mmyers Feb 23 '12 at 23:06
So. It has come to this. – DavRob60 Feb 27 '12 at 19:36
@DavRob60 very dramatic – Some Helpful Commenter Feb 27 '12 at 19:44
WAAAAAAT!1! NOOO00OO I just got my 10k rep. :D – Kev Feb 27 '12 at 19:56
Good. I feel dirty when I have "unearned" rep after I have deleted upvoted content. The next recalc window can never happen soon enough. – Anthony Pegram Feb 27 '12 at 20:17
@mmyers after extensive research and expense, we have invested in a robust reputation storage and nurturing facilty (adjacent to the colo). All reputation points not needed at the current time will be humanely relocated there and allowed to relax and mingle. When new reputation is required, we will use the reputation from this facility until exhausted. No reputation points will be slaughtered - not even harmed a little - in this exercise. "The Reputation Defence League" and the "Humane Treatment for Points Society" can call off their blockades. – Marc Gravell Feb 28 '12 at 12:55
Reputation changed unexpectedly? Don't know where to turn? We've moved heaven and earth to ensure your score is always correct! I feel the earth move under my feet I feel the sky come tumbling, tumbling down! – Adam Davis Mar 1 '12 at 17:25
Why throw away all those perfectly good reputation points? They still need a home. I officially offer my profile as a storage facility for all rejected reputation points. I will give them a good home and make sure they are well cared for! :P – Chuck Burgess Mar 2 '12 at 2:36
So how long will that notice banner be up on SO? Why couldn't you make it like the other notifications where we can close them? – j08691 Mar 2 '12 at 3:40
I have been robbed!! Don't you think it is just wrong to delete a question that other people have spent their time answering them? – Ravi Mar 2 '12 at 5:05
Good thing you didn't touch the badges. – bioffe Mar 2 '12 at 6:48
Noooooooo. You should have granted amnesty for all past fake reputation. – DerVO Mar 2 '12 at 16:04
For anyone who was wondering, Jon Skeet lost only 13 points this time because he regularly recalculates his rep. – mmyers Mar 2 '12 at 16:12

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