Through Feb. 28, 2013, Enterprise Plus members can earn double points on qualifying rentals plus earn additional points for qualifying activity. Register for the promotion and you’ll earn a one-time bonus of 20 points. Refer a friend to the program and earn 300 points per referral when they enroll in Enterprise Plus and complete a qualifying rental by Feb. 28. Earn 500 bonus points when five of your referrals sign up and rent a car. Purchase GPS on a qualifying rental and earn 50 points. Share the Plus Your Points promotion with your Facebook friends and receive 30 points. Members who haven’t rented cars from Enterprise in the past 24 months are eligible to receive additional bonus points for completing rental activity during the promotion. Visit http://www.plusyourpoints.enterprise.com for additional details and to register.