Must admit , its a very good site the efinancialcareers one , there have been several occasions where I have been contacted by agencies that have seen my CV on that site , UAE agencies included.
Worth also noting that it does pay to update your CV from time to time (even a minor detail) as this places you at the top of the pile in any relevant 'keyword' search a prospective agency/employer conducts.
While there are at the moment not a huge range of jobs posted I put this down to the fact that the gulf region is a relatively new portal for this website Im sure in a few months there will be a great deal more to choose from.
Just my 0.02 cents worth.
Good Luck.