Signsun66 [upd]
Upload with the tag #signsun66 . If your image features the number 6, 66, or 666, the post is considered "Lucky" and pinned to the top of the community feed.
Understanding “signsun66”: Origins, Usage, and Digital Footprint signsun66
A "sign" is a marker. In this community, a sign is defined as Upload with the tag #signsun66