Nice to be able to reply to one of your posts withing having to deal with trolls and spam accounts. Good to see you post here!
It's just a matter of time. I made a rough calculation I can make memo completely unusable for weeks for less than 100$. User driven way to filter information is desperately needed.
or adaptive reply prices like yours e.g. if you are a 'high profile' community member who is getting a lot of automated troll replies.. increase the price. Dashboard already filters.