To post a link to your replay, use this prefix:
http://www.wgt.com/replay.aspx?ID=
And insert the replay ID at the end. Example:
http://www.wgt.com/replay.aspx?ID= e6516dd7-f80a-4146-97fa-9c6f016a51d9
The replay ID can be found in the URL field of the replay screen: Click here for an example.
If you can't see your URL field you can watch your own replay and click the SHAREbutton that appears at the bottom or in the silver box that pops up after the replay is over. Type your own email address into the box and click SEND. When the email arrives in your inbox just copy and paste the entire link into your post.