As I mentioned in an earlier thread, I'm considering launching a new Bitcoin-related service. Now, as a webmaster myself I know how hard it can be to get customers. One popular way to get new visitors is via signature campaigns. A typical signature campaign might have 30-300 members who are paid about 3-30 cents per post. Obviously, the number is higher for those with higher rank since their signatures tend to stand out more. In order for a signature campaign to be successful for the advertiser, each post should make over 3-30 cents in increased traffic and sales. Now, is this generally the case? I know PrimeDice canceled their campaign and a few others have ended theirs too (e.g. ActionCrypto) so I'd imagine it's not actually all that profitable?