We know that Google likes to see certain on page elements that it deems are quality signals. We also know that when trying to develop links (which Google also really likes) it is important to have a respectful looking website.
I'm not talking about meta tags or title tags. I am talking about content elements. Which content elements do you think are good quality signals for Google & for convincing link partners that they should link to you?
Here are some examples that you may think are overhyped or an absolute necessity:
Physical Address - Can give the impression of a more respectful business
Toll Free Number - Does this even matter since most phone lines no longer charge for long distance
Copyright Notice - Just make sure the copyright displays the correct year
What content elements would you make sure are on your site?