How ?

[Ghostie123]

Would anybody know how or if I can delete a thread on my posts page?

[Tuike]

Nope, you can't. My Posts keeps track of all of your posts. :>
I suggest though that you start using bookmarking feature; at the bottom of every topic, there is "Bookmark topic." Click on that when you want to bookmark something, then go to "View bookmarks", it can be found above the logout-button. There you can freely remove topics from bookmarks when you no longer want them there. There's also another nice thing to bookmarks feature; you don't have about post on the topic in order to keep track of it. ;)

If my explanation of bookmarking was confusing, check this topic: viewtopic.php?f=5&t=198967

[Ghostie123]

yay thank you!