A click-digger is a person on social media who ask you to like/comment/share their supposedly social-worthy post, all the while proclaiming that most people won't. They desperately hope that they can guilt-trip you into clicking on and sharing their post.
"I hate Norma sending me those guilt-trips about having a family member with mental health issues, saying that she knows no-one will re-post it. She's such a click-digger!"