Unlocked Wikiposts may be created and edited by any logged-in member who has at least 90 days of membership and 90 posts. Some of FT's member-maintained wikis have guidelines for making edits. You should familiarize yourself with these guidelines before you start adding information or making changes.

On the other hand, as lin821 has pointed out, some Wikiposts are locked and may only be edited by a moderator. If you see a problem or error in a locked wiki, you should send a PM to the forum mods.