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.
Website doesn't mean much though... If you are attached to an operator which is untrusted, you should always ask the Signature campaign operator to use escrow. It is much safer..