Usable arabic font

To: Doc at arabeyes dot org
Subject: Usable arabic font
From: Chahibi Youssef <chahibi at gmail dot com>
Date: Mon, 7 Mar 2005 22:18:06 +0000
Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:mime-version:content-type:content-transfer-encoding; b=iGh4BM3d/+Z+kLoYZyX2Hp/BQpUPIrq+z9c14IBjhhi5XSClQto0fju0wzYECQUgWvbAbrTF+dkkIOqN3tTcOsxSCfgdvTVWSlqoQAdaAXaj0eNdBDDFg584QeUqmrVxCtD/FSdbijtDzfxBo8apwrz7lXmdecAsR6bovxt3Ydg=

السلام عليكم
Which arabic font do you think is the most suitable for the desktop ?
Why are open source arabic fonts smaller than latin characters ?