I don’t think theymos will restrict campaigns to those that only pay in bitcoin because of free market issues. This would clearly benefit those who participate in dig deals.

I am not a huge fan of enforcing the “signature campaign guidelines” for managers because it will lead to campaigns being run(managed) off the site when advertisers are banned. This is also why forcing campaigns to pay in bitcoin will not work.

I would note that it is not uncommon for a group of people to wear similar signatures because they hold a similar stance on issues they feel strongly about or want to support similar statements.