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No need to erase your account, just use Steem. I still have my Twitter and FB.

I rarely check FB let alone post, and I look at Twitter once a day.

If you make money in Twitter and FB, why bother deleting them? Steemit is side cash, you have to own Steem Power to make money. It is mission impossible if you're new to it, probably will take consistent posting for at least 3 months to see some gain