Al Arabiya, http://www.alarabiya.net/english/ has all the hallmarks of a professional media Web site. Its "about" section clearly identifies who owns it, its company history and target audience.
The site says it is "a pioneer in online journalism in the Arabic speaking world and aspires to be the most reliable source of news and analysis about the Middle East catering to readers all over the world."
The content in the main section of the site (on the left) is written in conventional newspaper style and is attributed to the wire agency(s) that produce it. It includes stories of interest from around the Middle East, and international stories of interest to a Middle Eastern audience. Opinion pieces are listed on the right, with the authors name clearly stated.
The design is clear and professional. The site also appears to be regularly updated as there is a fresh date on most of the stories, with the "front page" listings bearing today's date.
First impression? A credible, cleanly organised site that I would visit for a good idea of what's making headlines in the Middle East.