For those who work in HR, this can be a lucrative source of side income, especially in the spring and summer when college and high school students are looking for jobs. A few tweaks to a resume can help someone land an interview who would have otherwise been passed over for the position. You can advertise your services on job hunting websites, or elsewhere on the web where job seekers tend to congregate.
How much will you make? I think my best month with Google AdSense was almost $5,000 over the last ten years. That amazing month blew my mind since it was actually near the beginning of my blogging journey. When you go from making zero to $5,000 in a month, that will rock your world. For me, it also got me even more excited because I knew there were other ways to monetize.