So far, my website(s) are no source of revenue, on the contrary: programming them and maintaining them costs us actually (quite a bit of) money.
Sponsored postings are a no-go for me. I only recommend businesses I personally experienced, when I truly believe they provide good service. Period! At this point I also don’t want any advertising on my website. Nevertheless, the question of monetization is currently opened. So let’s see how I fare over the next few years. But sponsored postings will never happen, no matter what.