I was wondering if there was a way to see all the posts you have liked, and possibly posts you have received likes on? Sometimes I'll come across really great posts and like them, and it would be nice to be able to back track to them, so I can refer to them again. Of course I can bookmark each page, but this is just a suggestion. Something such as a little box which shows all the likes you have given on posts (maybe under your profile?), then you can click that post and it will take you to that specific post in said Topic.

You cannot sort by likes but you can subscribe to a topic. Subscribing lets you see all the topic you liked by clicking on your profile.