Memo users often tip 546, 555, 567, 600, 666, 678, 777, 789, 888, 1000, 1111, 1234, 2000, 2019, 3000, 3333, 5000, 7777, 10000 satoshis
I have a feeling Memo users are either mathematicians or just plain fond of numbers, especially those with repeating digits or cultural significance. I confess to being the latter.
