I haven't used any of the other Steem apps.  Steemit keeps me busy enough.  Besides, when I tried logging into Busy.org, it wouldn't accept my Steemit password.  I figured it would be all one in the same.

Good tips on selecting who to follow.  I've done that - followed someone for one good post - then had little interest in anything else they posted.  I hate to unfollow people, but sometimes that's what we need to do.