I agree with you that signature rules should be laid out better, like I said earlier in the thread, when you go to edit your signature, there should be a message there specifying what is allowed in signatures. Clearly, it is not clear enough and this is a problem because people continue to have lengthy signature links and other people keep getting annoyed about it.
Also about turning off signatures so that you don't have to see them. I can see this being a last resort option, and I personally have a long list of people on ignore because of their signatures.
As for actual rules about signature lengths, this was posted earlier
http://forum.smartcanucks.ca/99418-r...ght=signatures
http://forum.smartcanucks.ca/112845-...ght=signatures
http://forum.smartcanucks.ca/25928-i...-links-canada/
I feel like a broken record, this is all I am saying about the topic.