Its quite apparent that Funcom is determined to delete the old AoC forums come July 1/2013.
Fortunately, you will still be able to get to them using the Internet Archive. Its slower and searching is much more of a pain, but at least its there, and will be there after July.
EDIT: Just tried this out a little more, its a big disappointment because a lot of the old links within the forum don't work.
All snapshots:
http://web.archive.org/web/*/http://...ageofconan.com
Old forums up to Feb 8th/2013
http://web.archive.org/web/201302082...geofconan.com/