Idea to mitigate effects of upvote bots and brigades
Make only each account’s 5 most recent upvotes effect post rank. In effect this would make vote sellers need to make many more accounts to be useful, they would need to churn upvotes....
There have been multiple accounts created with the sole purpose of posting advertisement posts or replies containing unsolicited advertising.
Accounts which solely post advertisements, or persistently post them may be terminated.