I am a freelance web developer I bid on a project posted by an indian employer to integrate paypal payment in his website. After finishing the work he didn't have accounts to test the payment, and said he was going to pay as he saw the site working in the sand box, but he didn't release the milestone.
I fired a dispute and attached all evidence that the work is done and he promised to pay, but freelancer ended up saying that I didn't finish on time and refunded milestone to the indian one.
If you want to be scammed go to freelancer.com