Nearly any site that asks for money up front is a scam. If you look carefully, you will notice that many of the jobs pay "extremely" above market salaries and yet they have been posted for months if not years.

The gullible look at the dollar signs and send their fees without considering the warning signs.

BTW there is a jobsindubai.org website as well - it's been around for at least 10 years and is still showing the same jobs from back then.