Of all the ridiculous and sublime ways to spend $10,000 a month of your enterprise SEO budget, your least greatest ROI has come from link exchange emails like this below, where a C-note can get you a backlink on a website with a domain authority of 80+ – potentially evening out that PBN you created for another $10k. The author took the screenshot. If you missed that hint of sarcasm above, let’s be clear, you should not be spending your enterprise SEO budget on link exchanges or PBNs.