Evaluation of National Cancer Institute Young Adult Stop-Smoking Program

Background: \- Researchers want to see how well the QuitTXT text-message program helps smokers ages 18 29 stop smoking. This is part of a larger online stop-smoking program by the National Cancer Institute. The QuitTXT program is a 2-week countdown to the smoker s quit date with 6 weeks of follow-up messages. Program participants will receive texts on their cell phones, including tips, information, and motivational messages, and then fill out surveys. Objectives: \- To study how well the QuitTXT program helps smokers ages 18 29 stop smoking. Eligibility: \- Adults ages 18 29 who have smoked on at least 5 of the past 30 days and who want to stop smoking in the next 30 days. Design: * Participants will receive a certain number of text messages during the 8-week study. They will receive between 0 to 5 messages per day (or up to a total of 130 messages). * Participants will first fill out a survey about their smoking and quitting experiences. Then they will choose a date to quit smoking (a quit date ) between 2 and 3 weeks after this survey. * Participants will take four other surveys online, one during the program and three more after they ve completed the program. Each survey will take about 10 20 minutes and asks about their smoking habits and views on smoking and quitting. Each survey will be sent by email, with reminders sent by email or telephone. * Participants will receive an iTunes or Amazon gift card for completing each survey honestly.