IMG tags in signatures are like this one
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lol
ie: [URL=http://...[IMG]http://img...] within member signatures. This might sound severe but it's been abused by a recent Troll. That proved the point that img tags are potentially dangerous to the forum & can be misused & abused. Instead other sig pics could be used.
(BTW CyberStalker if need be i can edit yours for you. So then you can load it up as a giF.)