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crowdsourcing
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duolingo
internet properties established in 2011
mobile
social networking language education websites
tc
2
×
apps
chat
chatterbots
education
flashcards
instant messaging
interactive fiction
ios
language learning
learning methods
luis-von-ahn
memorization
natural language parsing
tinycards
vocabulary
What
duolingo
language
learning
2
×
read
today
anybody
app
aren’t
chatbots
comes
company
company’s
context
conversation
duolingo’s
education
equations
expanding
extremely
facts
flashcards
focus
help
history
introduced
involves
ios
languages
launching
learn
learned
memorization
mobile
new
online
pokemon’s
popular
probably
reach
reinvent
Language
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crowdsourcing
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tc
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learning
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