Older posts -- Please read
Previously, once a post scrolled off the last page of the forums, it was no longer considered 'live'. If you had the url of the post, it would still be accessible, but posting to it would not bring it back to the top of the forum. Going forward, you should now be able to post to an older post and bring it back to life. On Tuesday, after our search engine indexes, all older posts should also be available via search.
Let me know if you have any questions, but please feel free to try it out if you're looking for an older post.