Fairness of the lists of the Mastodon instances

Last updated 26 days ago

Motivation

  • There are too many list of Mastodon instances websites [1, 2].

  • Oligopolization of instances may brings too fast/crowded local timelines.

Fairness of the list of instances

  • Fair in this slide: To support decentralization of instances.

  • Unfair in this slide: To support oligopolization of instances.

Summery of fairness and unfairness

  • (↑ Fair)

  • Newest

  • Random

  • Much faster (Many toots per hour)

  • Many weekly active users

  • Alphabetically

  • Manual guidebooks

  • Registered earlier

  • Many toots

  • Many users

  • (↓ Unfair)

Apparent patterns of unfairness

Shrink wrap effect

If the content is hidden, we evaluate someone by the fame or popularity.

Oldies effect

Old famous instances still famous ever.

Positive feedback

If someone is recommended by the system, it cause the farther recommendation itself.

Case 1: Many users

Implementations

  • k52.org (Default) [3]

  • mastodonsearch.jp (Default) [4]

  • mastportal.info [5]

  • mstdn.imado.jp (Default) [6]

Specification

  • Sort by the number of user registrations.

Unfairness

  • Shrink wrap effect: We may register into some instances just for the curiosity, not for the real contents or attractions.

  • Oldies effect: The number of the users is accumulated ever. We rarely delete our accounts.

  • Positive feedback: If we register into the instances listed in this kind of ranking, it directly accelerates itself.

Fairness

  • Not at all.

Summary

  • Most unfair.

Case 2: Many toots

Implementations

  • mastportal.info [5]

Specification

  • Sort by the number of toots.

Unfairness

  • Oldies effect: The number of toots is accumulated ever. We rarely delete our toots.

  • Positive feedback: If we register into the instances listed in this kind of ranking, it directly accelerates itself.

Fairness

  • No shrink wrap effect: Tooting is an active action in the instance.

Summary

  • Super unfair.

Case 3: Registered earlier

Implementations

  • qiita.com/noraworld/items/ea853c6897326feda51f (Default) [7]

Specification

  • Sort by the registoration date.

Unfairness

  • Oldies effect: Old instances may earn many users.

Fairness

  • No positive feedback.

  • No shrink wrap effect.

Summary

  • Super unfair.

Case 4: Manual guidebooks

Implementations

  • coron.tech (Default) [8]

  • qiita.com/cv_k/items/8ecafea3ce7dd720cec6 (Default) [9]

  • shimaguni.symphonic-net.com/mstdn (Default) [10]

  • Nagi (Default) [11, 12]

  • Doutei Penguin (Default) [13, 14, 15]

Specification

  • Blog posts or static documents which are manually written.

Unfairness

  • Oldies effect: Manual guidebooks are rarely updated.

  • The authors of the guidebooks sometimes just follow some existing authority.

Fairness

  • No positive feedback.

  • No shrink wrap effect.

Summary

  • Remarkably unfair.

Case 5: Alphabetically

Implementations

  • instances.tacostea.net (Default) [16]

  • ja.mstdn.wiki (Default) [17]

Specification

  • Sort by the host name alphabetically.

Unfairness

  • Alphabetically fast instances may earn many users.

Fairness

  • No oldies effect.

  • No positive feedback.

  • No shrink wrap effect.

Summary

  • Remarkably unfair.

Case 6: Many weekly active users

Implementations

  • joinmastodon.org (Default) [18]

Specification

  • Sort by the number of weekly active users

Unfairness

  • Less positive feedback: Shows continuous attraction.

  • Less shrink wrap effect: Shows continuous attraction.

Fairness

  • No oldies effect.

Summary

  • Little bit unfair.

Case 7: Much faster (Many toots per hour)

Implementations

  • distsn.org [19]

  • mastportal.info [5]

Specification

Unfairness

  • Less positive feedback: Shows continuous attraction.

Fairness

  • No oldies effect.

  • No shrink wrap effect.

Summary

  • Little bit unfair.

Case 8: Random

Implementations

  • instances.social (Default) [20]

Specification

  • Shuffled order.

Unfairness

  • Not at all.

Fairness

  • No oldies effect.

  • No positive feedback.

  • No shrink wrap effect.

Summary

  • Neutral for fairness or unfairness.

Case 9: Registered later

Implementations

  • distsn.org (Default) [19]

  • fediverse.network [21]

  • k52.org [3]

  • mastportal.info (Default) [5]

Specification

  • Sort by the registoration or establishment date.

Unfairness

  • Not at all.

Fairness

  • Reverse oldies effect.

  • No positive feedback.

  • No shrink wrap effect.

Summary

  • Fair.

References

[1] Hakaba Hitoyo, 脱中央集権のためのデザイン: セレブのためのインターネットを99 %の手に取り戻す, https://hakabahitoyo.wordpress.com/2017/12/24/decentralization-by-design/

[2] マストドン日本語ウィキ, インスタンスの一覧を提供するウェブサイト, https://ja.mstdn.wiki/?curid=1156

[3] nihonyamori, 日本のマストドンインスタンスの一覧, http://k52.org/mastodon/

[4] マストドン検索ポータル, http://mastodonsearch.jp/

[5] ナツキ, マストポータル, https://mastportal.info/

[6] さいきりん, インフォサーカス・インコーポレイテッド, https://mstdn.imado.jp/

[7] のら, 日本Mastodonインスタンス一覧, https://qiita.com/noraworld/items/ea853c6897326feda51f

[8] takimura, Mastodon (マストドン) のインスタンス一覧, https://coron.tech/mastodon/instance/

[9] cv_k, 日本のマストドンインスタンス一覧, https://qiita.com/cv_k/items/8ecafea3ce7dd720cec6

[10] おかず◎, マストドンインスタンスリンク集@日本サーバー, http://shimaguni.symphonic-net.com/mstdn/

[11] Иagi, インスタンスカタログ, https://docs.google.com/spreadsheets/d/1JGH7pJ5zKGXSOKcxNVghuP4XgwH0J0qmkjLpOrRdnMA

[12] Иagi, Mastodon 2 Advent Calendar 2017 12/18, https://gist.github.com/nagiept/73592e9cb4db8b221d58fe9cf8f0ffab

[13] 童貞ペンギン, 今流行り(?)のマストドン、始めるならどのインスタンスに入ればいいの?【三大インスタンス編】, http://ch.dlsite.com/matome/3447

[14] 童貞ペンギン, 今流行り(?)のマストドン、始めるならどのインスタンスに入ればいいの?【中規模インスタンス編】, http://ch.dlsite.com/matome/3477

[15] 童貞ペンギン, 今流行り(?)のマストドン、始めるならどのインスタンスに入ればいいの?【小規模インスタンス編】, http://ch.dlsite.com/matome/3532

[16] Takaki IEKURA, Instances List, https://instances.tacostea.net/list.php

[17] マストドン日本語ウィキ, https://ja.mstdn.wiki

[18] joinmastodon.org, https://joinmastodon.org/

[19] hakaba Hitoyo, distsn.org http://distsn.org

[20] TheKinrar, Mastodon Instances, https://instances.social/

[21] href, Fediverse Network, https://fediverse.network/