Hello @alz190, When we first released D.Buzz there was no reward limit however a lot of people got upset, as they feared people would start the spam HIVE with our app (Reward farming). After discussing with various community leaders it was decided that the best course of action would be to limit the number of rewards a person could receive in a 24 hour period and per Buzz.
So, $1 max reward per buzz was set. You can however, Buzz as many times a day as you like.
I hope this makes sense.
Thank you for your note!