Ok, so I was skeptical and extremely nervous buying jigocity deals.
I bought a Westfield gift card about a week ago from Jigo City, and I can confirm I received the gift card today. I've checked the balance on the gift card on the Westfield website which confirmed my card was active with the correct amount.
So there you go, they aren't a scam site (^__^)
I got my Go card fine too, though they asked me again for my delivery address. Looked like they hadn't got their IT sorted out. Also the envelope was hand addressed so it looks like they were just starting out. I felt sorry for the person who had to write all those addresses. Nice handwriting though. Couldn't tell if it was a hot redhead or what from the handwriting. :)