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crowdsourcing
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internet properties established in 2011
social networking language education websites
apps
chatterbots
duolingo
instant messaging
interactive fiction
mobile
natural language parsing
startups
tc
What
chatbots
duolingo
help
language
2
×
launched
2
×
new
2
×
text
users
allow
app
brush
conversation
conversations
crew
demand
different
discuss
duolingo's
duolingo’s
eternally
expensive
far
foreign
forth
free
french
german
giving
having
helping
hold
interesting
ios
language.the
languages
learn
learners
learning
lessons
lot
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