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### Why do *you* answer questions on math.stackexchange?

Why do you post answers on math.stackexchange? As a math student, this is a very helpful resource. This could be asked for any forum, but I would like to understand the motives why people are ...
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Also known as the happiest place on the website! Use this thread to congratulate MSE users that you feel have reached a significant milestone on the website, or to congratulate the website itself, if ...
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### Congratulations, Brian M. Scott! [duplicate]

Congratulations on reaching 100k reputation! We all appreciate the quality (and quantity) of your posts on Math.SE.
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### History of Math.StackExchange

This thread is used to record significant events in the life of Math.StackExchange. What should be recorded. Creation of the site (proposed, beta tested, graduated). Technological innovations like ...
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### Congratulations, Qiaochu! [duplicate]

The 100k club (or "100k-club", if you care about hyphens) has increased in size again!
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### Congratulations to Brian M. Scott!! (200K edition) [duplicate]

It's been a little more than two weeks since our last celebration, but today another math.SE user has passed the 200K barrier! Prof. Scott's habit of providing fantastic answers to questions of all ...
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### Congratulations, Arturo! [duplicate]

I think congratulations are due to Arturo Magidin on hitting 100k reputation points here on MSE! All the users of this site are better off for his tireless contributions, and we appreciate his ...
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### List of chatrooms

This is a place where we could collect list of chat rooms associated with this site. There are several rooms which have potential to be useful if more users were aware of them or more users visited ...
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### Congratulations to André Nicolas! [duplicate]

Congratulations on reaching $200,000$ reputation! I think I speak for us all when I say that your posts here are greatly appreciated.
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### Congrats to Ross Millikan AND Davide Giraudo [duplicate]

This just in. Ross Millikan has joined J.M. in the exclusive club of users who have cast at least 10000 votes. Congrats and thanks! As per Julien's suggestion I'm also soliciting opinions from ...
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### Congratulations, DonAntonio! [duplicate]

I'm all for another occasion to celebrate. DonAntonio has surpassed $100$k today! Congratulations, DonAntonio, for this impressive accomplishment! And just as important, thank you for your time, ...
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### Congratulations, Hagen von Eitzen! +100k !! [duplicate]

The number of +100k users has increased! Why? Because of the ~4000 excellent answers Hagen von Eitzen produced. All the hard work paid off. Congratulations!
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### Congratulations to Asaf [duplicate]

Asaf Karagila has become the first to be on MSE for 1000 consecutive days. There is even a movie, Asaf of the Thousand Days, with Richard Burton, and Genevieve Bujold playing Asaf. EDIT. The Guide ...