trying to find topics I've posted

You cannot. Your posts are ephemeral.

If you can remember what you called a post simply use the search feature.

That is very unfortunate. Kind of defeats the purpose of a discussion board…

That is helpful, thanks! I know that I do have a topic that isn’t in there, that seems to have fallen off the list. Thanks. :)
The same worked on duckduckgo.com, as I’ve stopped using google.