Would like a hook to add node or web address link to contact form

Hi, the feature I would like to see if an automatic, or option for, tag line to be added to the subject of the email sent. Features such as the Title of the Node it was sent from, or the website address link. This way it's not left to chance the person sending the email will add in these items to the subject.

I'm not sure if this is part of this node, or if this node links onto another node and their the guys to ask.