Your website address or its sub-links called deep link.
Those links are very important, because search engines and the users are reaching those links. client_id=283920308357683&scope=email&redirect_uri=://forum.br/applications/core/interface/facebook/auth.php? ref=a HR0c Dov L2Zvcn Vt Ln Rl YW1zc GVhay5jb20u Yn Iv&state=front-bf566a2b You can create links by adding rel="nofollow" tag, which is not searched by search engines. You also should add nofollow tag to the links, you think it doesn't need it.
That's why you should use alt tag on your all pictures, which you use in your website.
It's crucial to use alt tag and to make sure search engines know what you are talking about.
You should not have too much external links on your website.