Steve’s SEO tips Myth #5 “You should not link out to other websites.”
Steve’s Google Tips #5
You should not link out to other websites
Provide value. When you’re creating content for the web, this should be the motivation behind it. And if that means linking out to a website other than your own to provide additional information, there’s nothing to be worried about.
“If you’re linking out naturally from your website to other sites that offer additional value and more context, then that’s fine And there’s nothing special that you need to do,” explains Google Webmaster John Mueller.
There are a few exceptions, though. If you link out to a website in exchange for a link back, link to an advertisement, or link out in your comments, that link is typically not as contextual or valuable as one that occurs naturally. In these situations, Mueller encourages the use of the rel=”nofollow” link attribute. More on that here.