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I did first look at share2steem as I also do use Instagram and Twitter regularly. However, I don't think I want all my content there to appear on my main Steem blog for this account, nor in everybody's feeds.

Perhaps I should have a dedicated "social" account for short form content that people can follow where I do share everything from twitter/Instagram/etc. But for me, it's nice to have an App that is Steem exclusive and one that is for my "real life" friends and network.