Pete-
It is easier for someone on an e-Ink Kindle to type in https://amzn.to/kddeal or https://amzn.to/amazonbfriday, or remember it is a conversation with their friends, than manually typing in https://www.amazon.com/b?node=384082011&_encoding=UTF8&tag=billybobscomp-20&linkCode=ur2&camp=1789&creative=9325
Seeing as how I have quite a population viewing this WordPress blog via an RSS feed on their e-Ink Kindles, it’s important to me to continue to show an amzn.to link so they can hit it with their computers vs. an e-Ink Kindle.
The page I linked to above may be showing up fine in the UK (I believe you are in the UK), but here in the USA rather than displaying amzn.to./amazonbfriday WordPress now displays the underlying Amazon URL of https://www.amazon.com/b?node=384082011&_encoding=UTF8&tag=billybobscomp-20&linkCode=ur2&camp=1789&creative=9325 directly on the web site.
In other words, while you say “the URL of a link isn’t meant tobe shown on a website” in the above, that is exactly what your plugin is doing on various, but not all, WordPress pages for viewers in the USA (at least on this site). The script is changing the link text, at least on this site for USA viewers.
I wasn’t asking you to “trawl” through the website, I just asked you a question. I certainly hope you have a better day today than the one you have displayed with me.
Regards,
Michael