Best Western Rewards members can earn 1,000 bonus points for each stay that they book online and consume between June 23 and September 1, 2014.
Best Western also offers up to 20% off for booking online, but any Best Western Rewards qualifying rate is eligible for the online booking bonus.
You can access and register for this offer on Best Western Rewards website here.
Note that you can combine this offer with the free night after staying three separate times offer (access here).
This is a nice sweetener for the main Summer 2014 promo which is a free night certificate after three separate stays.
Here are the terms and conditions of this sale: