Regarding scammy accounts: Web of trust filters require a scammer to dupe a handful of accounts into following them so that they then appear within the web of trust of other users to then perpetrate their scams. This happens online and offline situations too. Scammers befriend unsuspecting people who they can then use to access their friend circles. Your failure to practice discernment and discretion here allows yourself to become a vector for a scammer to gain access to your circles of trust. Don’t fall for it. Be smart.