Recently, one my my work covered in some news websites. Should I add them to my linkedin profile. If the answer is yes, which section?
If you worked in a company that recently recieved positive media exposure, you should of course have it listed on your LinkedIn profile, under Experience and/or Organizations.
After you've added this, you will see some options for the entry. One of these is adding a relevant link, which in your case, could be a link to the article on the news websites. It looks something like this:
You can use the Link button to show something that you're particularly proud of from your time at the company in question.
Linkin is the Facebook of shameless self promotion. Write a post that links to the news story. Add self-promotional text to that post.