\chapter{Conclusion}

The change introduced by the StackExchange team produced desired results in half of the investigated communities. The results of the StackOverflow community most closely resembles the expectation of improving the welcomingness. AskUbuntu, stats.stackexchange.com, tex.stackexchange.com, and unix.stackexchange also profit from this change. ServerFault is mostly unaffected by the change. MathOverflow, SuperUser, math.stackexchange.com, and electronics.stackexchange.com do not profit from the change and show not an increase but decrease or continuation in decrease of sentiment.

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