Eventually the account farmers will run out of merits to tip themselves. Hilariousandco has nailed a few accounts already for merit abuse, as has Lauda I believe. This is when we can successfully implement rules for campaigns(or theymos cam implement them).
Something like users must earn 5 merits a months for their account to display a signature if being done by theymos or managers can make a user earn 1 merit per week to stay in a campaign.
The problem is still gonna be the same managers whom accept anyone and everyone. If all aren't on board it will fail. Kinda why I feel theymos should implement the restrictions.