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Similar todos
check username
don’t allow user to change username if already exists 
#remoteworkers
Build first username checker 
#availablefyi
Check if email is taken, on Omniauth callback for Signup
make simple script that checks whether telegram username/groupname is available 
#wip
Choose username screen 
#fun
fixed username bug
Build a pretty version of the username check #availablefyi
Save username to DB if it doesn't exist 
#oneclicktest
require users to have a username 
#betalist
check on users 
#checkwise
Make username regex more flexible because before some existing usernames were invalid #betalist
update username if twitter username changes #betalist