Meta Stack Exchange is where users like you discuss bugs, features, and support issues that affect the software powering all 158 Stack Exchange communities.

What is meta?
Here's how it works:
  1. Any Stack Exchange user can ask a question
  2. The community provides support, votes on ideas, and reports bugs
  3. Your voice helps shape the way Stack Exchange operates

This question already has an answer here:

I and my friend are both members of Stack Overflow. I told my friend to vote me up. He upvoted almost all of my questions and answers. I got almost 150 upvotes. On the next day, when I visited Stack Overflow, I found my reputation as it had been before the upvotes.

How does Stack Overflow identify, differentiate, and track dummy/unnecessary upvotes?

share|improve this question

marked as duplicate by gnat, rene, S.L. Barth, Ward, Nathan Tuggy Jul 19 at 16:13

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

16  
So...you admit that you tried to cheat? ;) – Time Traveling Bobby Aug 11 '10 at 7:44
4  
Just so that I can sleep tonight... was the other user Jon Skeet? – uɐɯsO uɐɥʇɐN Aug 11 '10 at 8:05
1  
What? There's no collusion tag? – Peter Ajtai Aug 11 '10 at 23:15
up vote 16 down vote accepted

statistics!

In fact, we have a whole community who does nothing but help us figure out statistical anomalies in voting.

Say Hi to them at http://stats.stackexchange.com

share|improve this answer
4  
Wow. What an interesting way to promote a SE site! :) – uɐɯsO uɐɥʇɐN Aug 11 '10 at 8:04
1  
@sugar: Because someone has answered it and the answer has an upvote. – kennytm Aug 11 '10 at 9:30
    
Because another anomalie has been detected probably. Don't worry about it. – Tom Aug 11 '10 at 9:32
6  
@sugar, why, trying to hide the evidence when it's too late? :) (thefirstpost.co.uk/…) – Benjol Aug 11 '10 at 10:12

Not the answer you're looking for? Browse other questions tagged .