2a. Persons subscribing to at least one American Airlines email product on the promotional microsite: During the Promotion Period, you will receive: i. All recipients of the targeted email have been pre-registered with the opportunity to enter the American Airlines Travel Brain Sweepstakes. In order to finalize the pre-registration, you must click on the link listed in the email sent to each targeted recipient, click to Subscribe to at least one (1) email product on the "Submit" button on the Subscribe page of the microsite. Upon submitting the Subscribe page, you will be entered into the drawing for the prize. Limit (1) entry per person through email product enrollment (regardless of the number of email products in which an individual enrolls). b. No Purchase Necessary: During the Promotion Period, you will receive: i. iOne (1) entry when you complete the non-targeted sweepstakes microsite, which is an official entry form online at www.aa.com/brain. Fill out the required information (including your first and last name, email address and AAdvantage� number) and click "submit" to enter the site. Upon clicking the "Submit" button on the Subscribe page of the microsite, you will be entered into the drawing for the prize. Limit (1) entry per person. ii. One (1) additional entry by forwarding the sweepstakes information to up to four (4) other individuals who would otherwise be eligible to enter the sweepstakes from www.aa.com/aatravelbrain. You may return to the site and refer additional friends, but you will not receive additional entries by using this method of entry. c. Limit two (2) entries per person, per AAdvantage� number, regardless of entry method.