In one embodiment, a system includes a server that hosts webpages facilitating user interaction between multiple endpoints. The system monitors for a user input requesting initiation of a happy hour, and when the input is detected, modifies the webpages to alert users of the happy hour. The users are notified of which user initiated the happy hour, and are also notified that interaction incentives accumulate at an increased rate during the happy hour. The system also tracks user scorings that accumulate based on the user interaction, and enables certain website features based on these user scorings. The system also tracks ratings for user-uploaded objects and identifies top rated objects for displaying on webpages viewable by other users.