At one time some people said they were having trouble reading the board because of the signatures.
I never really understood it, but I made it so alternating posts were different colors, and they said that helped. But someone, and I forget who, was still having problems.
Turns out you can read the board without signatures. I never knew that before until I was working on some other stuff.
Go to
http://seprepnet.com/forum/index.php?action=profile;area=themeClick "Don't show users' signatures."
and then click "Change profile"
Hopefully that will help whoever was left.