This has been discussed at length, primarily amongst EK employees on PPRuNe. There are ofcourse several work arounds which you'll find by doing some google based searches.
A document that was leaked which might be of interest to you is the UAE's official Internet Censorship Plan which was leaked as a pdf.
Can be downloaded by visting
WikiLeaks
I've heard blockages also differ from one ISP to the next, as well as geographic location. Apparently the censorship doesnt apply to dubai's 'free zones' ??