I found 2 main problems with this site: 1) if you're a profesional going to offer your services, you will never be able to compete with those "low prices" advertised by competitors. Yeah, lots are not even living in "rich countries", 2) If you're going to hire, and get tempted, by those very low prices for everything, you may have some problems when it comes to overall quality.
Tip for consumers: Ask for a test (your own). Samples sent are usually better in quality than the final work done. Reading past and recent customers experience about a giving worker is very helpful.