You can discriminate anyway you like here.
Dubizzle isn't the worst. Look at Gulf News job ads. A typical one reads:
"Male, Hindu, married Indian passport holder aged between 26 and 27, height 1.7m to 1.75m, weight 65-70kg, fluent in Hindi, English and Arabic, with 2-3 years relevant Dubai experience and UAE driving licence wanted for work as a driver"