I've never liked the rule, but of course I follow it. And I can understand the "no outside marital message boards," etc. stuff.
I do think it takes away from some of the fun and encouragement of the forum when you can't even post a link to a motivational/inspirational song on YouTube, for example, or a funny video or pic or something. It's not like the forum software used here is chock full of emoticons and such, and these types of things just add to the overall ENJOYMENT of the site and break some of the (understandable) heaviness of the topics involved on a site like this.