A TwinWiki has at least the following applications:

TwinWikiForAds, TwinWikiForAnnotations, TwinWikiForBrainstorming, TwinWikiForCartoons

• TwinWikiForCommunicationSkills giving
  • advice to friendler formulations
  • hints to hanging questions
  • advice how to make the formulation more persuasive
• TwinWikiForDiscussion
  • separating DocumentMode and ThreadMode
• TwinWikiForChatting
  • Seedwiki has/had a usersettable Chat-plug in for each page
• TwinWikiForFormalizingConversationsMakingThemUnderstandableToMachines, TwinWikiForHumorousStatements
• TwinWikiForImprovingSameLanguage giving
  • corrections to typos, grammar
  • hints to a better style
  • answers to questions like: "How shall I put it in English?"
  • audio representations of texts

• TwinWikiForLyrics
  • expressing the ideas of it twin as lyrics ( in WardsWiki there was a lyrics-friendly phase )

TwinWikiForMarketing, TwinWikiForMultilingualApplication (more than one language translations on one page aggregated as Mattis does it), TwinWikiForOpponents, TwinWikiForProponents, TwinWikiForReconciliatingProponentsAndOpponents, TwinWikiForSocialLinguisticStudies, TwinWikiForTranslationInOtherLanguage, TwinWikiForVoting, TwinWikiForWebWeaving

... (please systemize, insert new entries in lexicographical order or expand)

<= TwinWiki