No I don't care what you say Creativity, intellectual, and physical proper are very important.
Anyone who thinks other wise either isn't them self an artist or doesn't work around artists, or designers who make a living off of those. Seeing people say those are load of crap upsets me.
Now thats is getting off topic, but I agree most forum signatures are other peoples images that someone else borrowed, and in a not commercial fashion isn't a big deal. But don't get upset when someone does it to you. Because it really isn't a big deal.