Hey! who is using gamification/achievements in their app?  Do you know any good examples?    I think there's a lot of benefits to it e.g.:     email notifications - more variety (e.g. x liked your post) keep people in the loop on your site   some people like competing on leaderboards  * can help surface content and people    Makerlog is doing a good job of this! I've been thinking to similar points/notifications to my website so contributors can earn rewards too.    How would you go about implementing it? what libraries that make it easier? Cheers!