It is obvious that the number of memos slightly got better, as we all know the activity of Steemians also went down since the Steem price is going down. I absolutely agree with you, to have a control over spam memos is important, we do not think about that in global way because we do not see that volume of spam on our accounts but when we think about the email boxes daily filled with spam mails that only stopped or got better after anti-spam programs them this is only decision to improve that on Steemit platform too.