Best practice for listing external news in website.

1. Is external linking good for SEO?
2. How should you tag outbound links from your site?
3. How many external links per article?

Is external linking good for SEO?

Top SEOs believe that external links are the most important source of ranking power. External links pass link equity (ranking power) differently than internal links because the search engines consider them as third-party votes.

How should you tag outbound links from your site?

Qualify your outbound links to Google

In order to do that, use one of the following rel attribute values in the <a> tag. Mark links that are advertisements or paid placements (commonly called paid links) with the sponsored value. More information on Google's stance on paid links.

How many external links per article?

While there are exceptions, a good rule of thumb is to aim for no more than 2-5 external links per longer blog post. If you find yourself needing to link to tons of outside sources in every post, you might find it more effective to simply explain those concepts yourself instead of directing traffic elsewhere.