I had a real bad experience here. At first I figured another Fiverr clone, but that's cool. Imitation is the highest form of... Well, you know.
Anyhow. I posted up a gig for myself. Designing logos. Anyhow. I actually sold 7 gigs within 3 weeks. I thought: "Hey! That's cool".
Then. I went to log in one day and I got a message saying my IP address was banned for severe violations of the TOS. What? I didn't do anything. So I messaged them and they wouldn't give me an answer as to what had happened.
Even worse. When I asked about my earnings I was shut down. That's when they stopped contact all together.
I, being angry went onto their Facebook and Twitter pages and started posting my experience. Along with my account. I got a message saying that after 45 days I could claim the earnings from one sale. And that the rest of my sales were refunded to the buyers. Why? I asked? The work was done and even got positive reviews. No response. I contacted one of the buyers which I knew from Fiverr. They said they never got any refund. So basically, Gigbucks stole my whopping 35 bucks.
On a side note. It's been almost 2 months and no refund for the "1" sale. IP is still blocked.
My advice. Steer clear. It was only 35 bucks but that's not the point. We can all see how these guys stay in business.