Today, I posted my nomination for a community moderator. Beside writing the text, I spent some time creating an "election poster" for myself. But when I submitted my nomination post, I got the message that images are not allowed in nominations, as a spam-prevention measure.
I uploaded my poster to Imgur and inserted a plain link to it in my nomination post, clearly stating that it is an election poster. I don't know if this is considered bending the rules, or if it is OK. I don't even know if self-promotional pictures are considered spam in a nomination post, or if the rule is meant to fight other types of pictures. There is a nomination post on Gaming which contains an embedded self-promotional video, and nobody seems to have a problem with it, so I decided to include the link. Still, I wonder: is it OK to keep it? And if yes, what kind of image would be considered spam in a nomination post? Why was the rule created in the first place?