I signed up using another email and username, X3nforo. I decided to LIKE a post I made, and it counted towards my overall "likes" - I'm proposing that either multiple registrations by x.y.z.ip are disabled, or if enabled, aren't allowed to LIKE posts made on that IP. Or even use the method above, and have an allow list for multiple IP's. I can see the "Like" and achievement/trophy system being abused otherwise. Edit: I'm also able to "follow" myself. Hope that makes sense.