[Arikana]

You can always look for all your past posts from your profile page by clicking on the 'statistics' tab, followed by the "find all posts by 'username'" link. :)

Also, another option is if you subscribe to thread through the link at the bottom of each thread page. You can then view all your subscribed threads by clicking the 'settings' link at the top of every page. :3

Hope this helps! :)