I have a scenario where I need to account for promo posts/ads within a category. For example, say I have a category called "featured", when I click through to this category, posts #2, #6 and #8 will display posts from the "Promo" category, while the rest of the "featured" posts would continue to render as normal.
My thinking was to create a "Promo" category, and add a custom field of "sequence" to the posts within this category. Then, during the rendering of the featured loop check the position in the loop, check to see whether a post of Promo with sequence position exists, and display this, somehow - I'm not sure how.
What would be the best way to implement this?