The goal of this study is to determine whether the ACT website provides higher quit rates than a current standard smoking cessation website.

Inclusion Criteria:

• age 18 or older
• smokes at least five cigarettes daily for at least past 12 months
• wants to quit in next 30 days
• willing to be randomly assigned to either group
• resides in US
• has at least weekly access to a high speed Internet connection and email
• willing and able to read in English
• not participating in other smoking cessation interventions (including our other intervention studies
• has never used the Smokefree.gov website
• willing to complete all three follow-up surveys
• provide email, phone, and mailing address
• provide contact information for two collaterals (e.g., relatives).
• does not have family, friends, or other household members participating

Exclusion Criteria:

• The exclusion criteria are the opposite of the inclusion criteria above.