why not we just report accounts and ban those obviously posting just to gain potential activity? that could be more effective in the long run
Perhaps accounts that have been ignored a high number of times should be reviewed by mods and banned if the mods are confident that the account in question is merely trying to increase activity? Maybe display the number of times accounts have been ignored (display ignore count)?
Problem is any method to combat this problem can be gamed, and maybe the market will work itself out. This is happening to some extent: most decent airdrops are sharedrops, and the good sig campaigns (DeepOnion) reject a lot of people.