Oh, that's cuz I'm wanting that to be my style :P I used to do this very rarely but I am now getting tried of just doing my normal retangle sigs. And charaters that pop-out don't normally look good to me.
Could do like on of my really old sigs and make the cut out even more techy lol
http://img386.imageshack.us/img386/4340/23lr.gif
but I didn't really like that as much for some reason.
and then my main reason for doing this was when I first made a sig like this the purpose was to get ride of the space that small sigs leave in your signature area lol yes I'm picky :P I didn't want to use the little user bars wanted somethign that fit my sig and this is what I came up with.