It's a bit like an introduction to a word in a dictionary. I usually use this tool to write articles that are semantically related. For example, if the topic of an article is about weight loss, then I actually need to add "exercise" to the article. The words "oatmeal" and "calories" help search engines to understand the content of this article
eBay Partner Network is an affiliate program run by eBay. It offers affiliates an opportunity to profit on 1,1 billion listings the platform hosts. eBay is one of the oldest online commerce sites and it allows the eBay Partner Network to leverage all this long history and established reputation to offer a top-notch affiliate marketing service to affiliates to profit with.