The main strategy employed by sites like Luckycrush is the use of a matching algorithm. This algorithm takes into account user profiles, interests, and preferences to match users with people who share similar values and outlooks on life. They also employ a variety of features to foster meaningful connections between users. These features include chatrooms for users to get to know each other better, video-calling options so that users can interact in real time, and even virtual gifts that are sent as tokens of appreciation or friendship. All of these strategies work together to create an environment that encourages meaningful connections between users!