The blog is hosted by wordpress.com. Whilst I didn't include any affiliate links in the original source of the post (as you can see from the source code), it se

The blog is hosted by wordpress.com. Whilst I didn't include any affiliate links in the original source of the post (as you can see from the source code), it seems wordpress.com silently embeds Skimlinks into footer of the page. This is not generating any revenue for myself. I have purchased the "no ads" upgrade which has removed the Skimlinks embed.