Board Thread:Questions and Answers/@comment-93.137.115.65-20140517102732/@comment-222.127.71.254-20140517114420

What kind of post?

If it's a comment, then I don't think you can edit it if you do not have an acount.

Editing main pages are possible even without an account (as long as you know what you are doing), but I don't know to what extent.