Heyam,
don't stop writing, and don't give up. Maybe we have to engage the old tools a little in order to get people using the new tools! I mean e-mail, letter post, word of mouth, a phone call or two. It could be that the Arab librarians you are trying to engage with are not in this 'space' yet. If you can get their e-mail addresses or th e-mails of the various Arab libraries, you could send them a message and tell them about your blog and how it might benefit them to use it. Use the personal touch with Arab librarians you might know or have met. Challenge them a little with posts on topics that might raise emotions if not tempers. About what we do, about our relevance, for example. Write posts that encourage and invite them to share their knowledge with their arab colleagues across the middle east. Something that might enthuse them. I cannot read arabic I'm sorry to say, maybe you are doing these things already. Forgive me if you are, I can guess from your writing here that you know what you are doing and are very motivated in doing it. Does lose heart.
Cheers, Ed

p.s.
My experience with colleagues is equally frustrating, they are reluctant to use new technologies. It is only about four years ago that I spent a lot of time getting them to standardise on e-mail as the primary tool for internal communication! But I realise that one of the most important battls to win is to show that library 2.0 is relevant, indeed essential. Easy for the converted to say, but we are in the minority stil I think.