Posting History

On the brown header is a Me on the right. Click on it and it will give you your posts etc. Click on post say and they should show up.

Sorry, just your forums, blogs and creations show up . My bad.

Madts is right. Creations, blogs and forums history is on your profile page. There is no page listing comment history though.

The comments history is helpful when you comment / ask a question and forget to “follow discussion”.
It allows you to go back and revisit the post you commented on.