You can use affiliate links after the fact. You don’t have to decide upon building a WordPress site that you’re going to optimize it with Amazon affiliate links. You can decide down the road that you want to give affiliate marketing a try and, consequently, revisit old content, embed affiliate links within it, and start generating revenue that way--especially if your old content is finally starting to take off.
Some merchants run their own (in-house) affiliate programs using dedicated software, while others use third-party intermediaries to track traffic or sales that are referred from affiliates. There are two different types of affiliate management methods used by merchants: standalone software or hosted services, typically called affiliate networks. Payouts to affiliates or publishers can be made by the networks on behalf of the merchant, by the network, consolidated across all merchants where the publisher has a relationship with and earned commissions or directly by the merchant itself.
The figure is actually a lot lower if you go by SiteSell’s statistics. According to them, WA is hosting approximately 17,000 active websites. And if we take into consideration that many members have several websites, we start to see how low the true figure really is. There’s probably just a few thousand active members at most. Rather pathetic for something that’s been going since 2005, don’t you think?
Once you've protected your prospecting pool, maximize your affiliate program by working with the best and leaving the rest. As the old 80/20 adage implies, most of your revenue will come from a very small percentage of your affiliates. Because it can be time-consuming to manage a larger affiliate network, consider selecting only a few companies initially, and interview them before signing them on. Affiliates are an extension of your sales force and represent your online brand, so choose partners carefully.