Yes,now a days signature compaign in forum is the best,easiest and instant way to grab btcs.There should be a proper website functioning for signature compaigns.like ads publisher site,advertiser and publishers , by making a proper signature compaign site,people will trust these type of schemes and will be paid to according to rules.
May be someone will take notice on my request about creating a proper website linked with bitcointalk for signature compaign system.
i am also attached signature compaign of PrimeDice.