Type this into the Google search box
site:freerepublic.com yourusername
If you use your real username, create a new account with a fake name. Also link the fake name to an email account not associated with you real name.
Google has already recorded every post.
Doing a test on Google search on some usernames and found results only back to Jan 1, 2019.
I am sure other agency have copies older than that. Google can only hold so much history.
Well, they're only going to display so much history from a casual "outsider" search. Everything else, they've got archived that isn't readily available to the "internet."
Speaking of archives...
I have done searches and found threads and posts going back to the early 2000s. It’s all ‘there.’
I also found a link about salamanders for sale.
o_O