Quote Originally Posted by SomethingBig
I don't think the host site allows direct linking of pictures. Try saving the picture to another site.
Drat.Beat me to it. But SomethingBig is right. Try photobucket. I think it may be down at the moment though, but if you wait awhile it'll come back on. If that doesnt work, you can always ask somone in the sig help thread to host it for you