We will conduct a randomized clinical trial within the ongoing service of the QUITPLAN® Helpline. Our primary aim is to examine the efficacy of two levels of telephone counseling for support persons (1 or 3 sessions) compared with a control condition on the proportion of smokers who call the Helpline over the 7 month follow-up period. We hypothesize a dose response relationship between number of telephone sessions provided to the support persons and smoker calls to the Helpline. Additional aims are to examine smoker quit attempts and cessation, and cost-effectiveness of the interventions.