If you want your sig to show up in any future posts, go to your Profile, click "Preferences" then scroll down and click, "always attach my signature"
This won't attach it to posts you've previously made, but it will on any going forward. If you want them on any old posts, you will have to edit you post and manually click "attch signature" in the options.
This won't attach it to posts you've previously made, but it will on any going forward. If you want them on any old posts, you will have to edit you post and manually click "attch signature" in the options.