ArabComment.com is the regional affiliate of GlobalComment.com. Pretty much all the same rules of GlobalComment apply to ArabComment. The only real difference has to do with the fact that ArabComment largely focuses on the Arab world, and issues that are peripheral to it: Islam and Muslim countries (for some reason, people seem to forget than not all Muslim countries are Arab), War on Terror, tasty shawarma in all its forms, and so on and so forth.
For a full description of GlobalComment, please go here.
If you’re interested in submitting your work to ArabComment, click for the guidelines.