Adding Facebook-style emoji reactions to BuddyPress activity updates

BuddyPress Reactions gives you exactly this. It adds Facebook-style emoji reactions to your BuddyPress community:

• Activity reactions — add emoji reactions to activity updates. Members hover over the like area and pick from the reaction set.
• Comment reactions — reactions on activity comments too, not just top-level posts.
• 200+ built-in emojis — choose from a large library, or create custom reaction sets with your own emojis.
• Multiple reaction sets — create different sets for different contexts.
• Animation options — configure reactions to be always animated, animated on hover, or static.
• Notification system — members get notified when someone reacts to their content.
• Statistics widgets — display reaction statistics and most-used reactions.
• bbPress support — reactions on forum topics and replies too.

It works natively with BuddyX Pro and Reign themes — the reaction picker is styled to match your theme automatically.