Ok when you go to someone profile and click on the info to find out where they have ever posted at how come it shows the private forums ? ( I checked out my own and was surprised it to that )

If you have access to the same private forums that these posts were made in, then you will be able to view these posts.

If you're able to view a different private forum than the one that you might have permission to, please PM me and let me know that.

People who don't have permission to the private forums shouldn't be able to see private forum posts.