That's it. The one who posts must "rate" on a scale of one to ten the one who posted before. like this:
A: x (why)
N: x (why)
S: x (why)
UT: x (why)
cya...
If you don't know what does the avatar, nick or signature means, you can answer "-" or "don't know" or "..."
EDIT ; Helpful guide
A signature is a piece of text that automatically appears after every post by an individual. Not everyone has one but if they do it will be preceded by a short line (see below)