Vote Contest
A vote contest is a mechanic in which entries (photos, creations, ideas) are judged not by an internal jury but by public vote, with the winner being whoever collected the most votes over a given period. Example: a brand running a photo contest where visitors vote for their favorite entry among all submissions combines a creative contest with a vote contest. This mechanic multiplies virality, but it also exposes the brand to fraud risk from bought votes or bots.