What if they do not have a link in them?
What if they are a minimum amount of 0.010 STEEM/SBD or some other amount?
At what amount would they be classified as spam or not spam? What about with links in them?
What if you only want to send them to your followers? And, following?
What if you select certain accounts by different parameters such as Reputation, STEEM Power, STEEM Balance, followers/following, activity, duration, and so on?
Should users have to subscribe to receive memos from another account?