Another step to organize your platform's data is to assign tags to offers and your contragents, which will enable you to manage your sources in a more convenient way.
Tags - are small text badges, which you can assign to offers and affiliates in order to describe the sphere of their activity.
You are familiar with tags, since you could adjust the set of tags during managing your platform's lists.
This functionality could be easily accessed by admin/managers at the offers/affiliates Edit page. You can add as may tags as you like, but keep in mind, that you would rather need a laconical minimum ;)
Affiliates can also set tags on their own at their profile page or during the signup process, if the Tag field is switched on for the signup page at platform's Settings.
Once tags are set, you can use them for filtering purposes at Offers/Affiliates lists of your platform: