I always struggle to find this thread and I’ve been using it for about 6 years, so your marbles are probably safe! This should take you to the most recent posts Promoting Folksy - #7418 by Lellibellecards
That’s some clever trickery that involves adding the shop tag to the image. I can honestly say I have never done it so I tend to list the shops and @ the shop in the blurb about the board. Not much help I know but it’s a way of doing it!