I used to sell on a marketplace for freelancers called Fiverr. In fact, I did quite well there for some time. However, it got to a point that my gigs were no longer selling, competition was becoming more fierce and I had forgotten about it for a while. I had forgotten...
The one way that your friends on Facebook will get your attention is by tagging you. They may tag you in a picture daily to greet you. Perhaps they may tag you only when there is an important announcement they want to make- and want to make sure that you notice it....