I hope this hasn't been posted before lol.
What this does is well, it makes the signature look better. It has a fieldset, and it says "Username's Signature" on top. I can't explain it properly, so I have a picture.
FIRST (you need this or it will just say your username)
Admin CP->Languages and Phrases->Phrase Manager->Add Phrase
The varname should be
adv_sig.
The text should be
's Signature.
*---___________________________________________---*
Edit the theme templates, and then edit Postbit Templates->postbit.
Find:
You must first be a
registered member to view any code.
Replace with:
You must first be a
registered member to view any code.
And it will output as my screenshot.
My username at the forum I took the screenshot at is .Paradox. (I think I spelled plane wrong

)
Also, later I'll update it so it uses legitimate phrases.
EDIT:::::Someone did already make this
Well, mine has different text lol.