I took screenshots when they changed the rules a couple of months ago, and have attached the relevant bit. Despite what a few of you are saying, rather unfairly imo, MedExpress expanded the friends and family code sharing to include all forms of social media, including forums. As soon as that happened, everyone started sharing them here, which is about the time the new promo code forum was set up.
We were posting in the forum set up for sharing those codes. Most of us used someone else's code to get started, ourselves. People want to use the codes, we shared them on the off chance they would be used.
And yes, it was a huge difference to some of us. I'm support staff in a school, getting someone to use my referral code was equivalent to half a day's pay for me.
As much as I understand people finding the code sharing a bit annoying, surely the purpose of the separate forum was so that you wouldn't have to read the posts, unless you wanted to find one to use, yourself?