Your comments

I like the idea, but it is difficult for me to see where it should be standing in the layout? I would love to see it but I am afraid it could affect the layout in some way.

I think it depends on the site you are a user on... As Valérie points out all the sites have the option to do it, but they have not done it all the way. I think the mark completed is to point out the option is there.