Hi guys, I need help vetting a developer. I am using Odesk, and I want to integrate XF forum with some cms. The programmer said it would take around 40 hours. He is from Ukraine, I have never hired person online before for something like this. He will be billed hourly, and i am supposedly able to monitor and see what he is doing. He gave me a few example sites he worked on, they seem legit, although simple. What kind of questions should I ask him?