There needs to be a view where you can see where you have posted comments (threads, topics, and profiles) or just view your recent activity (visited John Doe's profile, posted on X topic, liked X comment etc).
Go to someone's profile and at the bottom there is a counter for discussions and comments
Clicking on them will show them
But that is limited to posted things, not visits or likes and the sort.
You can see which of your own comments were liked or marked as spam etc
@XQlusioN thanks for the comment. I found on my profile how to view likes, insights, comments etc this morning.
@NianticMac can you mark this as closed/resolved?