Any officer, director or member of a nonprofit organization which, pursuant to a written agreement with a local government or a law-enforcement agency, regularly assists law-enforcement agencies by (i) publicly soliciting information from anonymous informants concerning criminal activity; (ii) gathering such information from informants; (iii) offering and paying rewards to informants for such information; and (iv) communicating such information to law-enforcement agencies, shall not be liable for any civil damages for acts or omissions on his part directly relating to his activities on behalf of such organization but only in the absence of gross negligence or willful misconduct.