how do I change the account used to post links to twitter?

Hi dnorman. Feedly delegates authentication to the browser and uses what ever account you are currently logged in so to post from another account you need to make sure that you are logged in to that account and reload the feedly page. We understand that it might not be ideal if you have multiple accounts but this is the only way in which feedly does not need to know, see and save user credentials. Hope this helps.
-Edwin