I see your signature on the post above when I enable signatures.

If you don't see signatures on other members' posts either, you may not have Show Signatures checked. That would be in Edit Options > Thread Display Options > Visible Post Elements.

A lot of members use signatures and like them. I usually keep them turned off to save loading time and make threads easier to read. I experimented with a signature when I was new here but found I wanted to keep changing it to fit with whatever I was posting at the time. I settled on an alternative:

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My advice is free, and worth every penny.
(This is not a signature.)