Are they paying red tagged users also? If no then tagging every user seen wearing the signature and majority of their post are just off topic or spam can reduce their effect on the forum. I don't have a problem with getting paid for quality contribution but to me any user accepting a payment to spam forum doesn't value the forum and can't be trusted.

Read the number one Benefits of promoting a quality paid signature campaign. these guys need to make at least 100post to receive something reasonable. PASS

that's not what the trust system was made for.