Yeah, I have to agree that this "rule" makes no sense. If an anon poster is not clear then people can either choose to stop reading the post and move on or ask for more information if they wish to help.
To say that a picture is required from anon posters does not even address any problem that _might_ exist... and I don't think one does exist. The correct response would be to require a person to register... which is not a board rule at this time.
I read this forum for two reasons... to obtain knowledge and to help with knowledge. As such, an anon's post with limited information does not really adversely affect me in anyway.
(It's not like this forums see 100's of new threads every day)