You can block any Storybird member.
Once blocked, they can't:
-see your stories in their feed
-comment on/heart/repost your stories.
They still can:
-visit your profile or public story page and read your stories
-share your public stories with others via email or on social networks
To block someone, either:
-tap their author button and select "Block"
-find them in your Following/Followers list, tap the Settings icon near their name, and select "Block", or
-do a people search, then tap the Settings icon near their name and select "Block"
You can unblock people, too.
-the people you block or unblock are not notified
-blocking an IRL Connection breaks the IRL Connection