Kristi Hines said
8 months ago: @lkellandmay Definitely acceptable. My template has a built in ad for my eBook at the bottom of each post and I’ve seen many that have a simple opt-in form. You never know what post people will come to first on your blog through search or social media – might as well capitalize on all of them. Plus, if it’s built in to your post footer, you only have to do it once!