You will receive requests from a variety of affiliates, it is your responsibility to either accept or decline requests made by affiliates to join your affiliate program. Under the "Your Affiliates" section you can review all pending requests.
Along with the request you will receive you will be given the option to either accept or decline. Before you make your decision, review the affiliate's details page studying the methods they describe in promoting your website. Decide based on the information they have provided whether you would like them to participate in your affiliate program.
If you accept an affiliate and then wish to decline the affiliate you can choose to decline from your 'Accepted Affiliates' list. To reinstate or accept any declined affiliates click on the "Accept" link from the "Declined Affiliates" list.