When you post in vB4, there is a checkbox that says:
[ ] Show your signature
If enabled, your signature will be displayed below the message.
It lets a user decide whether to include his signature in the post he is currently make. On a per-post basis, the user can include a signature (or not).
It doesn't exist in vB5, and I'm asking whether anyone knows of flags I'm missing, plug-ins that duplicate the functionality, or anything else.
What you're pointing to are options that determine whether a user sees other peoples' signatures or not.