Pichu said:
Which would be better for signatures,with background,or without.
I like without but which one is more professional?
It really depends, if you want to go for a minimal simple but modern look I would go without, but like if your doing signatures like tags like the stuff I showcased here
http://www.runegear.net/showthread.php?tid=63016 you will need a background.
I personally like mine without a background but it is all what other people like and you like. Somebody make make something look nice without and with a background.