Seo Google
Have you ever noticed that having the right keyword in your web address helps a lot, it also helps for an often overlooked factor – others who link to you editorially often link using the business (domain) name. And if that happens to be your keyword, then you are getting optimized links by default.

if in addition to that you got all your links with the same keyword as your webaddress keyword … meaning your are almost unbeatable on the web !
But the fact is, that if the optimization on your sites is already so low that it nothing changes:-)
In case you work with your site right it really makes total sense to have the key phrase as the title and use it as the heading as well.