Maybe. There has been no community consensus as of this revision of this answer; thus there should not have been any mass-retagging (not yet, anyway).
That said, there are currently 4 questions tagged signature (down from 60). They are as follows:
Two about using handwritten signatures in digital documents:
- How can I add a signature field in a PDF? (not a digital signature)
- How can I sign a PDF document quickly and cheaply?
One about using a static image (an “image signature”) as a form of signature analoguous to a handwritten signature:
One about the on-filesystem location of signature-related configuration for Microsoft Outlook: