Ok, I've noticed that many people are having trouble with their signature. Specificaly, turning them on. Here's a short guide on how to do just that.
First, go to the top toolbar of the forums, and click profile. From there, you should see a little sub section called preferences. Click on that, and scroll down. There should be something that says "Always Show Signature" with a little box to the left of it. Click the box, and go to the bottom of the page and click save changes.
Hopefully, this will stop members from always asking the question "Where's my signature?" in random threads.